Finding the Fourth Proportional to 1,562.96, 2,156.52 and 899.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.96 : 2,156.52 = 899.60 : x
2. Step 2: Convert to fraction form
   1,562.96/2,156.52 = 899.60/x
3. Step 3: Cross multiply
   1,562.96x = 2,156.52 × 899.60
4. Step 4: Simplify right side
   1,562.96x = 1,940,005.39
5. Step 5: Solve for x
   x = 1,940,005.39/1,562.96
6. Step 6: Final answer
   x = 1,241.24