Finding the Fourth Proportional to 2,499.78, 3,750.10 and 834.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.78 : 3,750.10 = 834.01 : x
2. Step 2: Convert to fraction form
   2,499.78/3,750.10 = 834.01/x
3. Step 3: Cross multiply
   2,499.78x = 3,750.10 × 834.01
4. Step 4: Simplify right side
   2,499.78x = 3,127,630.54
5. Step 5: Solve for x
   x = 3,127,630.54/2,499.78
6. Step 6: Final answer
   x = 1,251.16