Finding the Fourth Proportional to 2,870.35, 3,964.98 and 2,248.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.35 : 3,964.98 = 2,248.74 : x
2. Step 2: Convert to fraction form
   2,870.35/3,964.98 = 2,248.74/x
3. Step 3: Cross multiply
   2,870.35x = 3,964.98 × 2,248.74
4. Step 4: Simplify right side
   2,870.35x = 8,916,209.13
5. Step 5: Solve for x
   x = 8,916,209.13/2,870.35
6. Step 6: Final answer
   x = 3,106.32