Finding the Fourth Proportional to 2,601.34, 3,902.25 and 870.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.34 : 3,902.25 = 870.22 : x
2. Step 2: Convert to fraction form
   2,601.34/3,902.25 = 870.22/x
3. Step 3: Cross multiply
   2,601.34x = 3,902.25 × 870.22
4. Step 4: Simplify right side
   2,601.34x = 3,395,816.00
5. Step 5: Solve for x
   x = 3,395,816.00/2,601.34
6. Step 6: Final answer
   x = 1,305.41