Finding the Fourth Proportional to 841,085.10, 1,160,656.90 and 478,474.83

Step by Step Solution

1. Step 1: Write the proportion equation
   841,085.10 : 1,160,656.90 = 478,474.83 : x
2. Step 2: Convert to fraction form
   841,085.10/1,160,656.90 = 478,474.83/x
3. Step 3: Cross multiply
   841,085.10x = 1,160,656.90 × 478,474.83
4. Step 4: Simplify right side
   841,085.10x = 555,345,111,719.64
5. Step 5: Solve for x
   x = 555,345,111,719.64/841,085.10
6. Step 6: Final answer
   x = 660,272.20