Finding the Fourth Proportional to 1,552.95, 2,142.71 and 880.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.95 : 2,142.71 = 880.72 : x
2. Step 2: Convert to fraction form
   1,552.95/2,142.71 = 880.72/x
3. Step 3: Cross multiply
   1,552.95x = 2,142.71 × 880.72
4. Step 4: Simplify right side
   1,552.95x = 1,887,127.55
5. Step 5: Solve for x
   x = 1,887,127.55/1,552.95
6. Step 6: Final answer
   x = 1,215.19