Finding the Fourth Proportional to 2,091.32, 2,885.78 and 1,251.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.32 : 2,885.78 = 1,251.91 : x
2. Step 2: Convert to fraction form
   2,091.32/2,885.78 = 1,251.91/x
3. Step 3: Cross multiply
   2,091.32x = 2,885.78 × 1,251.91
4. Step 4: Simplify right side
   2,091.32x = 3,612,720.30
5. Step 5: Solve for x
   x = 3,612,720.30/2,091.32
6. Step 6: Final answer
   x = 1,727.48