Finding the Fourth Proportional to 3,059.10, 4,588.98 and 978.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,059.10 : 4,588.98 = 978.61 : x
2. Step 2: Convert to fraction form
   3,059.10/4,588.98 = 978.61/x
3. Step 3: Cross multiply
   3,059.10x = 4,588.98 × 978.61
4. Step 4: Simplify right side
   3,059.10x = 4,490,821.72
5. Step 5: Solve for x
   x = 4,490,821.72/3,059.10
6. Step 6: Final answer
   x = 1,468.02