Finding the Fourth Proportional to 2,670.80, 3,685.71 and 1,491.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,670.80 : 3,685.71 = 1,491.91 : x
2. Step 2: Convert to fraction form
   2,670.80/3,685.71 = 1,491.91/x
3. Step 3: Cross multiply
   2,670.80x = 3,685.71 × 1,491.91
4. Step 4: Simplify right side
   2,670.80x = 5,498,740.15
5. Step 5: Solve for x
   x = 5,498,740.15/2,670.80
6. Step 6: Final answer
   x = 2,058.84