Finding the Fourth Proportional to 1,500.87, 2,070.86 and 871.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,500.87 : 2,070.86 = 871.23 : x
2. Step 2: Convert to fraction form
   1,500.87/2,070.86 = 871.23/x
3. Step 3: Cross multiply
   1,500.87x = 2,070.86 × 871.23
4. Step 4: Simplify right side
   1,500.87x = 1,804,191.00
5. Step 5: Solve for x
   x = 1,804,191.00/1,500.87
6. Step 6: Final answer
   x = 1,202.10