Finding the Fourth Proportional to 1,141,156.56, 1,711,733.20 and 342,436.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141,156.56 : 1,711,733.20 = 342,436.80 : x
2. Step 2: Convert to fraction form
   1,141,156.56/1,711,733.20 = 342,436.80/x
3. Step 3: Cross multiply
   1,141,156.56x = 1,711,733.20 × 342,436.80
4. Step 4: Simplify right side
   1,141,156.56x = 586,160,439,461.76
5. Step 5: Solve for x
   x = 586,160,439,461.76/1,141,156.56
6. Step 6: Final answer
   x = 513,654.71