Finding the Fourth Proportional to 1,123,166.72, 1,551,004.80 and 721,458.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,166.72 : 1,551,004.80 = 721,458.56 : x
2. Step 2: Convert to fraction form
   1,123,166.72/1,551,004.80 = 721,458.56/x
3. Step 3: Cross multiply
   1,123,166.72x = 1,551,004.80 × 721,458.56
4. Step 4: Simplify right side
   1,123,166.72x = 1,118,985,689,561.09
5. Step 5: Solve for x
   x = 1,118,985,689,561.09/1,123,166.72
6. Step 6: Final answer
   x = 996,277.46