Finding the Fourth Proportional to 2,799.72, 3,864.42 and 1,870.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,799.72 : 3,864.42 = 1,870.92 : x
2. Step 2: Convert to fraction form
   2,799.72/3,864.42 = 1,870.92/x
3. Step 3: Cross multiply
   2,799.72x = 3,864.42 × 1,870.92
4. Step 4: Simplify right side
   2,799.72x = 7,230,020.67
5. Step 5: Solve for x
   x = 7,230,020.67/2,799.72
6. Step 6: Final answer
   x = 2,582.41