Finding the Fourth Proportional to 1,298.52, 1,931.77 and 1,294.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298.52 : 1,931.77 = 1,294.20 : x
2. Step 2: Convert to fraction form
   1,298.52/1,931.77 = 1,294.20/x
3. Step 3: Cross multiply
   1,298.52x = 1,931.77 × 1,294.20
4. Step 4: Simplify right side
   1,298.52x = 2,500,096.73
5. Step 5: Solve for x
   x = 2,500,096.73/1,298.52
6. Step 6: Final answer
   x = 1,925.34