Finding the Fourth Proportional to 2,978.43, 4,466.21 and 898.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.43 : 4,466.21 = 898.05 : x
2. Step 2: Convert to fraction form
   2,978.43/4,466.21 = 898.05/x
3. Step 3: Cross multiply
   2,978.43x = 4,466.21 × 898.05
4. Step 4: Simplify right side
   2,978.43x = 4,010,875.40
5. Step 5: Solve for x
   x = 4,010,875.40/2,978.43
6. Step 6: Final answer
   x = 1,346.64