Finding the Fourth Proportional to 1,533.41, 2,115.98 and 870.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,533.41 : 2,115.98 = 870.37 : x
2. Step 2: Convert to fraction form
   1,533.41/2,115.98 = 870.37/x
3. Step 3: Cross multiply
   1,533.41x = 2,115.98 × 870.37
4. Step 4: Simplify right side
   1,533.41x = 1,841,687.69
5. Step 5: Solve for x
   x = 1,841,687.69/1,533.41
6. Step 6: Final answer
   x = 1,201.04