Finding the Fourth Proportional to 1,452.78, 2,008.50 and 1,122.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.78 : 2,008.50 = 1,122.30 : x
2. Step 2: Convert to fraction form
   1,452.78/2,008.50 = 1,122.30/x
3. Step 3: Cross multiply
   1,452.78x = 2,008.50 × 1,122.30
4. Step 4: Simplify right side
   1,452.78x = 2,254,139.55
5. Step 5: Solve for x
   x = 2,254,139.55/1,452.78
6. Step 6: Final answer
   x = 1,551.60