Finding the Fourth Proportional to 2,626.04, 3,938.13 and 870.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,626.04 : 3,938.13 = 870.74 : x
2. Step 2: Convert to fraction form
   2,626.04/3,938.13 = 870.74/x
3. Step 3: Cross multiply
   2,626.04x = 3,938.13 × 870.74
4. Step 4: Simplify right side
   2,626.04x = 3,429,087.32
5. Step 5: Solve for x
   x = 3,429,087.32/2,626.04
6. Step 6: Final answer
   x = 1,305.80