Finding the Fourth Proportional to 1,562.37, 2,156.43 and 899.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.37 : 2,156.43 = 899.61 : x
2. Step 2: Convert to fraction form
   1,562.37/2,156.43 = 899.61/x
3. Step 3: Cross multiply
   1,562.37x = 2,156.43 × 899.61
4. Step 4: Simplify right side
   1,562.37x = 1,939,945.99
5. Step 5: Solve for x
   x = 1,939,945.99/1,562.37
6. Step 6: Final answer
   x = 1,241.67