Finding the Fourth Proportional to 1,562.34, 2,156.22 and 899.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.34 : 2,156.22 = 899.18 : x
2. Step 2: Convert to fraction form
   1,562.34/2,156.22 = 899.18/x
3. Step 3: Cross multiply
   1,562.34x = 2,156.22 × 899.18
4. Step 4: Simplify right side
   1,562.34x = 1,938,839.33
5. Step 5: Solve for x
   x = 1,938,839.33/1,562.34
6. Step 6: Final answer
   x = 1,240.99