Finding the Fourth Proportional to 2,686.72, 4,030.50 and 837.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686.72 : 4,030.50 = 837.46 : x
2. Step 2: Convert to fraction form
   2,686.72/4,030.50 = 837.46/x
3. Step 3: Cross multiply
   2,686.72x = 4,030.50 × 837.46
4. Step 4: Simplify right side
   2,686.72x = 3,375,382.53
5. Step 5: Solve for x
   x = 3,375,382.53/2,686.72
6. Step 6: Final answer
   x = 1,256.32