Finding the Fourth Proportional to 2,591.15, 3,887.33 and 836.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.15 : 3,887.33 = 836.32 : x
2. Step 2: Convert to fraction form
   2,591.15/3,887.33 = 836.32/x
3. Step 3: Cross multiply
   2,591.15x = 3,887.33 × 836.32
4. Step 4: Simplify right side
   2,591.15x = 3,251,051.83
5. Step 5: Solve for x
   x = 3,251,051.83/2,591.15
6. Step 6: Final answer
   x = 1,254.68