Finding the Fourth Proportional to 2,913.59, 4,370.47 and 833.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,913.59 : 4,370.47 = 833.78 : x
2. Step 2: Convert to fraction form
   2,913.59/4,370.47 = 833.78/x
3. Step 3: Cross multiply
   2,913.59x = 4,370.47 × 833.78
4. Step 4: Simplify right side
   2,913.59x = 3,644,019.32
5. Step 5: Solve for x
   x = 3,644,019.32/2,913.59
6. Step 6: Final answer
   x = 1,250.70