Finding the Fourth Proportional to 2,350.81, 3,526.05 and 870.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,350.81 : 3,526.05 = 870.07 : x
2. Step 2: Convert to fraction form
   2,350.81/3,526.05 = 870.07/x
3. Step 3: Cross multiply
   2,350.81x = 3,526.05 × 870.07
4. Step 4: Simplify right side
   2,350.81x = 3,067,910.32
5. Step 5: Solve for x
   x = 3,067,910.32/2,350.81
6. Step 6: Final answer
   x = 1,305.04