Finding the Fourth Proportional to 1,432.50, 2,150.56 and 1,238.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.50 : 2,150.56 = 1,238.74 : x
2. Step 2: Convert to fraction form
   1,432.50/2,150.56 = 1,238.74/x
3. Step 3: Cross multiply
   1,432.50x = 2,150.56 × 1,238.74
4. Step 4: Simplify right side
   1,432.50x = 2,663,984.69
5. Step 5: Solve for x
   x = 2,663,984.69/1,432.50
6. Step 6: Final answer
   x = 1,859.68