Finding the Fourth Proportional to 2,690.43, 4,034.62 and 1,046.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,690.43 : 4,034.62 = 1,046.78 : x
2. Step 2: Convert to fraction form
   2,690.43/4,034.62 = 1,046.78/x
3. Step 3: Cross multiply
   2,690.43x = 4,034.62 × 1,046.78
4. Step 4: Simplify right side
   2,690.43x = 4,223,359.52
5. Step 5: Solve for x
   x = 4,223,359.52/2,690.43
6. Step 6: Final answer
   x = 1,569.77