Finding the Fourth Proportional to 2,978.52, 4,468.40 and 898.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.52 : 4,468.40 = 898.64 : x
2. Step 2: Convert to fraction form
   2,978.52/4,468.40 = 898.64/x
3. Step 3: Cross multiply
   2,978.52x = 4,468.40 × 898.64
4. Step 4: Simplify right side
   2,978.52x = 4,015,482.98
5. Step 5: Solve for x
   x = 4,015,482.98/2,978.52
6. Step 6: Final answer
   x = 1,348.15