Finding the Fourth Proportional to 1,533.27, 2,115.86 and 870.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,533.27 : 2,115.86 = 870.26 : x
2. Step 2: Convert to fraction form
   1,533.27/2,115.86 = 870.26/x
3. Step 3: Cross multiply
   1,533.27x = 2,115.86 × 870.26
4. Step 4: Simplify right side
   1,533.27x = 1,841,333.39
5. Step 5: Solve for x
   x = 1,841,333.39/1,533.27
6. Step 6: Final answer
   x = 1,200.92