Finding the Fourth Proportional to 1,422.04, 1,963.96 and 898.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.04 : 1,963.96 = 898.38 : x
2. Step 2: Convert to fraction form
   1,422.04/1,963.96 = 898.38/x
3. Step 3: Cross multiply
   1,422.04x = 1,963.96 × 898.38
4. Step 4: Simplify right side
   1,422.04x = 1,764,382.38
5. Step 5: Solve for x
   x = 1,764,382.38/1,422.04
6. Step 6: Final answer
   x = 1,240.74