Finding the Fourth Proportional to 1,562.53, 2,156.45 and 899.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.53 : 2,156.45 = 899.41 : x
2. Step 2: Convert to fraction form
   1,562.53/2,156.45 = 899.41/x
3. Step 3: Cross multiply
   1,562.53x = 2,156.45 × 899.41
4. Step 4: Simplify right side
   1,562.53x = 1,939,532.69
5. Step 5: Solve for x
   x = 1,939,532.69/1,562.53
6. Step 6: Final answer
   x = 1,241.28