Finding the Fourth Proportional to 1,315,063,128.69, 1,814,764,875.53 and 728,339,667.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,315,063,128.69 : 1,814,764,875.53 = 728,339,667.57 : x
2. Step 2: Convert to fraction form
   1,315,063,128.69/1,814,764,875.53 = 728,339,667.57/x
3. Step 3: Cross multiply
   1,315,063,128.69x = 1,814,764,875.53 × 728,339,667.57
4. Step 4: Simplify right side
   1,315,063,128.69x = 1,321,765,246,157,591,040
5. Step 5: Solve for x
   x = 1,321,765,246,157,591,040/1,315,063,128.69
6. Step 6: Final answer
   x = 1,005,096,422.61