Finding the Fourth Proportional to 1,562.54, 2,156.28 and 899.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.54 : 2,156.28 = 899.42 : x
2. Step 2: Convert to fraction form
   1,562.54/2,156.28 = 899.42/x
3. Step 3: Cross multiply
   1,562.54x = 2,156.28 × 899.42
4. Step 4: Simplify right side
   1,562.54x = 1,939,401.36
5. Step 5: Solve for x
   x = 1,939,401.36/1,562.54
6. Step 6: Final answer
   x = 1,241.19