Finding the Fourth Proportional to 2,870.53, 4,297.39 and 2,179.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.53 : 4,297.39 = 2,179.91 : x
2. Step 2: Convert to fraction form
   2,870.53/4,297.39 = 2,179.91/x
3. Step 3: Cross multiply
   2,870.53x = 4,297.39 × 2,179.91
4. Step 4: Simplify right side
   2,870.53x = 9,367,928.73
5. Step 5: Solve for x
   x = 9,367,928.73/2,870.53
6. Step 6: Final answer
   x = 3,263.49