Finding the Fourth Proportional to 841,061.48, 1,160,624.30 and 478,451.21

Step by Step Solution

1. Step 1: Write the proportion equation
   841,061.48 : 1,160,624.30 = 478,451.21 : x
2. Step 2: Convert to fraction form
   841,061.48/1,160,624.30 = 478,451.21/x
3. Step 3: Cross multiply
   841,061.48x = 1,160,624.30 × 478,451.21
4. Step 4: Simplify right side
   841,061.48x = 555,302,092,495.03
5. Step 5: Solve for x
   x = 555,302,092,495.03/841,061.48
6. Step 6: Final answer
   x = 660,239.60