Finding the Fourth Proportional to 1,055,892.51, 1,583,900.37 and 407,472.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055,892.51 : 1,583,900.37 = 407,472.12 : x
2. Step 2: Convert to fraction form
   1,055,892.51/1,583,900.37 = 407,472.12/x
3. Step 3: Cross multiply
   1,055,892.51x = 1,583,900.37 × 407,472.12
4. Step 4: Simplify right side
   1,055,892.51x = 645,395,241,632.69
5. Step 5: Solve for x
   x = 645,395,241,632.69/1,055,892.51
6. Step 6: Final answer
   x = 611,231.95