Finding the Fourth Proportional to 1,500.51, 2,070.72 and 871.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,500.51 : 2,070.72 = 871.09 : x
2. Step 2: Convert to fraction form
   1,500.51/2,070.72 = 871.09/x
3. Step 3: Cross multiply
   1,500.51x = 2,070.72 × 871.09
4. Step 4: Simplify right side
   1,500.51x = 1,803,778.31
5. Step 5: Solve for x
   x = 1,803,778.31/1,500.51
6. Step 6: Final answer
   x = 1,202.11