Finding the Fourth Proportional to 1,161,060.43, 1,602,316.67 and 644,816.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,161,060.43 : 1,602,316.67 = 644,816.72 : x
2. Step 2: Convert to fraction form
   1,161,060.43/1,602,316.67 = 644,816.72/x
3. Step 3: Cross multiply
   1,161,060.43x = 1,602,316.67 × 644,816.72
4. Step 4: Simplify right side
   1,161,060.43x = 1,033,200,579,550.72
5. Step 5: Solve for x
   x = 1,033,200,579,550.72/1,161,060.43
6. Step 6: Final answer
   x = 889,876.66