Finding the Fourth Proportional to 1,300.88, 1,951.12 and 435.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.88 : 1,951.12 = 435.20 : x
2. Step 2: Convert to fraction form
   1,300.88/1,951.12 = 435.20/x
3. Step 3: Cross multiply
   1,300.88x = 1,951.12 × 435.20
4. Step 4: Simplify right side
   1,300.88x = 849,127.42
5. Step 5: Solve for x
   x = 849,127.42/1,300.88
6. Step 6: Final answer
   x = 652.73