Finding the Fourth Proportional to 2,978.97, 4,468.91 and 898.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.97 : 4,468.91 = 898.71 : x
2. Step 2: Convert to fraction form
   2,978.97/4,468.91 = 898.71/x
3. Step 3: Cross multiply
   2,978.97x = 4,468.91 × 898.71
4. Step 4: Simplify right side
   2,978.97x = 4,016,254.11
5. Step 5: Solve for x
   x = 4,016,254.11/2,978.97
6. Step 6: Final answer
   x = 1,348.20