Finding the Fourth Proportional to 1,629.55, 2,434.42 and 1,039.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,629.55 : 2,434.42 = 1,039.86 : x
2. Step 2: Convert to fraction form
   1,629.55/2,434.42 = 1,039.86/x
3. Step 3: Cross multiply
   1,629.55x = 2,434.42 × 1,039.86
4. Step 4: Simplify right side
   1,629.55x = 2,531,455.98
5. Step 5: Solve for x
   x = 2,531,455.98/1,629.55
6. Step 6: Final answer
   x = 1,553.47