Finding the Fourth Proportional to 1,722.16, 2,376.72 and 1,059.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.16 : 2,376.72 = 1,059.24 : x
2. Step 2: Convert to fraction form
   1,722.16/2,376.72 = 1,059.24/x
3. Step 3: Cross multiply
   1,722.16x = 2,376.72 × 1,059.24
4. Step 4: Simplify right side
   1,722.16x = 2,517,516.89
5. Step 5: Solve for x
   x = 2,517,516.89/1,722.16
6. Step 6: Final answer
   x = 1,461.84