Finding the Fourth Proportional to 611,810.32, 845,004.72 and 407,524.72

Step by Step Solution

1. Step 1: Write the proportion equation
   611,810.32 : 845,004.72 = 407,524.72 : x
2. Step 2: Convert to fraction form
   611,810.32/845,004.72 = 407,524.72/x
3. Step 3: Cross multiply
   611,810.32x = 845,004.72 × 407,524.72
4. Step 4: Simplify right side
   611,810.32x = 344,360,311,916.68
5. Step 5: Solve for x
   x = 344,360,311,916.68/611,810.32
6. Step 6: Final answer
   x = 562,854.70