Finding the Fourth Proportional to 1,344.72, 2,012.52 and 880.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.72 : 2,012.52 = 880.56 : x
2. Step 2: Convert to fraction form
   1,344.72/2,012.52 = 880.56/x
3. Step 3: Cross multiply
   1,344.72x = 2,012.52 × 880.56
4. Step 4: Simplify right side
   1,344.72x = 1,772,144.61
5. Step 5: Solve for x
   x = 1,772,144.61/1,344.72
6. Step 6: Final answer
   x = 1,317.85