Finding the Fourth Proportional to 2,931.95, 4,398.95 and 1,288.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,931.95 : 4,398.95 = 1,288.27 : x
2. Step 2: Convert to fraction form
   2,931.95/4,398.95 = 1,288.27/x
3. Step 3: Cross multiply
   2,931.95x = 4,398.95 × 1,288.27
4. Step 4: Simplify right side
   2,931.95x = 5,667,035.32
5. Step 5: Solve for x
   x = 5,667,035.32/2,931.95
6. Step 6: Final answer
   x = 1,932.86