Finding the Fourth Proportional to 1,522.72, 2,102.18 and 1,056.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.72 : 2,102.18 = 1,056.16 : x
2. Step 2: Convert to fraction form
   1,522.72/2,102.18 = 1,056.16/x
3. Step 3: Cross multiply
   1,522.72x = 2,102.18 × 1,056.16
4. Step 4: Simplify right side
   1,522.72x = 2,220,238.43
5. Step 5: Solve for x
   x = 2,220,238.43/1,522.72
6. Step 6: Final answer
   x = 1,458.07