Finding the Fourth Proportional to 1,200,687.93, 1,656,944.39 and 649,404.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,687.93 : 1,656,944.39 = 649,404.25 : x
2. Step 2: Convert to fraction form
   1,200,687.93/1,656,944.39 = 649,404.25/x
3. Step 3: Cross multiply
   1,200,687.93x = 1,656,944.39 × 649,404.25
4. Step 4: Simplify right side
   1,200,687.93x = 1,076,026,717,347.91
5. Step 5: Solve for x
   x = 1,076,026,717,347.91/1,200,687.93
6. Step 6: Final answer
   x = 896,175.18