Finding the Fourth Proportional to 1,978.31, 2,961.03 and 1,458.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.31 : 2,961.03 = 1,458.10 : x
2. Step 2: Convert to fraction form
   1,978.31/2,961.03 = 1,458.10/x
3. Step 3: Cross multiply
   1,978.31x = 2,961.03 × 1,458.10
4. Step 4: Simplify right side
   1,978.31x = 4,317,470.55
5. Step 5: Solve for x
   x = 4,317,470.55/1,978.31
6. Step 6: Final answer
   x = 2,182.41