Finding the Fourth Proportional to 2,238.52, 3,357.76 and 870.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.52 : 3,357.76 = 870.52 : x
2. Step 2: Convert to fraction form
   2,238.52/3,357.76 = 870.52/x
3. Step 3: Cross multiply
   2,238.52x = 3,357.76 × 870.52
4. Step 4: Simplify right side
   2,238.52x = 2,922,997.24
5. Step 5: Solve for x
   x = 2,922,997.24/2,238.52
6. Step 6: Final answer
   x = 1,305.77