Finding the Fourth Proportional to 1,301.40, 1,951.56 and 684.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,301.40 : 1,951.56 = 684.72 : x
2. Step 2: Convert to fraction form
   1,301.40/1,951.56 = 684.72/x
3. Step 3: Cross multiply
   1,301.40x = 1,951.56 × 684.72
4. Step 4: Simplify right side
   1,301.40x = 1,336,272.16
5. Step 5: Solve for x
   x = 1,336,272.16/1,301.40
6. Step 6: Final answer
   x = 1,026.80