Finding the Fourth Proportional to 1,757.39, 2,426.32 and 1,128.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,757.39 : 2,426.32 = 1,128.18 : x
2. Step 2: Convert to fraction form
   1,757.39/2,426.32 = 1,128.18/x
3. Step 3: Cross multiply
   1,757.39x = 2,426.32 × 1,128.18
4. Step 4: Simplify right side
   1,757.39x = 2,737,336.21
5. Step 5: Solve for x
   x = 2,737,336.21/1,757.39
6. Step 6: Final answer
   x = 1,557.62