Finding the Fourth Proportional to 1,758.40, 2,426.52 and 1,128.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,758.40 : 2,426.52 = 1,128.04 : x
2. Step 2: Convert to fraction form
   1,758.40/2,426.52 = 1,128.04/x
3. Step 3: Cross multiply
   1,758.40x = 2,426.52 × 1,128.04
4. Step 4: Simplify right side
   1,758.40x = 2,737,211.62
5. Step 5: Solve for x
   x = 2,737,211.62/1,758.40
6. Step 6: Final answer
   x = 1,556.65