Finding the Fourth Proportional to 1,978.29, 2,731.32 and 1,232.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.29 : 2,731.32 = 1,232.55 : x
2. Step 2: Convert to fraction form
   1,978.29/2,731.32 = 1,232.55/x
3. Step 3: Cross multiply
   1,978.29x = 2,731.32 × 1,232.55
4. Step 4: Simplify right side
   1,978.29x = 3,366,488.47
5. Step 5: Solve for x
   x = 3,366,488.47/1,978.29
6. Step 6: Final answer
   x = 1,701.72