Finding the Fourth Proportional to 2,128.62, 2,937.46 and 1,232.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.62 : 2,937.46 = 1,232.30 : x
2. Step 2: Convert to fraction form
   2,128.62/2,937.46 = 1,232.30/x
3. Step 3: Cross multiply
   2,128.62x = 2,937.46 × 1,232.30
4. Step 4: Simplify right side
   2,128.62x = 3,619,831.96
5. Step 5: Solve for x
   x = 3,619,831.96/2,128.62
6. Step 6: Final answer
   x = 1,700.55