Finding the Fourth Proportional to 1,562.10, 2,156.43 and 898.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.10 : 2,156.43 = 898.82 : x
2. Step 2: Convert to fraction form
   1,562.10/2,156.43 = 898.82/x
3. Step 3: Cross multiply
   1,562.10x = 2,156.43 × 898.82
4. Step 4: Simplify right side
   1,562.10x = 1,938,243.09
5. Step 5: Solve for x
   x = 1,938,243.09/1,562.10
6. Step 6: Final answer
   x = 1,240.80