Finding the Fourth Proportional to 2,870.68, 4,306.04 and 790.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.68 : 4,306.04 = 790.72 : x
2. Step 2: Convert to fraction form
   2,870.68/4,306.04 = 790.72/x
3. Step 3: Cross multiply
   2,870.68x = 4,306.04 × 790.72
4. Step 4: Simplify right side
   2,870.68x = 3,404,871.95
5. Step 5: Solve for x
   x = 3,404,871.95/2,870.68
6. Step 6: Final answer
   x = 1,186.09