Finding the Fourth Proportional to 2,870.55, 4,305.26 and 790.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.55 : 4,305.26 = 790.02 : x
2. Step 2: Convert to fraction form
   2,870.55/4,305.26 = 790.02/x
3. Step 3: Cross multiply
   2,870.55x = 4,305.26 × 790.02
4. Step 4: Simplify right side
   2,870.55x = 3,401,216.03
5. Step 5: Solve for x
   x = 3,401,216.03/2,870.55
6. Step 6: Final answer
   x = 1,184.87