Finding the Fourth Proportional to 1,939,216.50, 2,909,139.87 and 573,128.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939,216.50 : 2,909,139.87 = 573,128.82 : x
2. Step 2: Convert to fraction form
   1,939,216.50/2,909,139.87 = 573,128.82/x
3. Step 3: Cross multiply
   1,939,216.50x = 2,909,139.87 × 573,128.82
4. Step 4: Simplify right side
   1,939,216.50x = 1,667,311,900,908.05
5. Step 5: Solve for x
   x = 1,667,311,900,908.05/1,939,216.50
6. Step 6: Final answer
   x = 859,786.36