Finding the Fourth Proportional to 1,397.76, 2,095.86 and 959.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.76 : 2,095.86 = 959.52 : x
2. Step 2: Convert to fraction form
   1,397.76/2,095.86 = 959.52/x
3. Step 3: Cross multiply
   1,397.76x = 2,095.86 × 959.52
4. Step 4: Simplify right side
   1,397.76x = 2,011,019.59
5. Step 5: Solve for x
   x = 2,011,019.59/1,397.76
6. Step 6: Final answer
   x = 1,438.74