Finding the Fourth Proportional to 1,244.16, 1,872.72 and 1,056.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,244.16 : 1,872.72 = 1,056.24 : x
2. Step 2: Convert to fraction form
   1,244.16/1,872.72 = 1,056.24/x
3. Step 3: Cross multiply
   1,244.16x = 1,872.72 × 1,056.24
4. Step 4: Simplify right side
   1,244.16x = 1,978,041.77
5. Step 5: Solve for x
   x = 1,978,041.77/1,244.16
6. Step 6: Final answer
   x = 1,589.86