Finding the Fourth Proportional to 1,434,978.47, 1,980,270.06 and 790,398.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434,978.47 : 1,980,270.06 = 790,398.65 : x
2. Step 2: Convert to fraction form
   1,434,978.47/1,980,270.06 = 790,398.65/x
3. Step 3: Cross multiply
   1,434,978.47x = 1,980,270.06 × 790,398.65
4. Step 4: Simplify right side
   1,434,978.47x = 1,565,202,782,059.42
5. Step 5: Solve for x
   x = 1,565,202,782,059.42/1,434,978.47
6. Step 6: Final answer
   x = 1,090,750.01