Finding the Fourth Proportional to 1,423.68, 1,957.04 and 1,272.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.68 : 1,957.04 = 1,272.72 : x
2. Step 2: Convert to fraction form
   1,423.68/1,957.04 = 1,272.72/x
3. Step 3: Cross multiply
   1,423.68x = 1,957.04 × 1,272.72
4. Step 4: Simplify right side
   1,423.68x = 2,490,763.95
5. Step 5: Solve for x
   x = 2,490,763.95/1,423.68
6. Step 6: Final answer
   x = 1,749.53