Finding the Fourth Proportional to 1,501.22, 2,071.64 and 871.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.22 : 2,071.64 = 871.75 : x
2. Step 2: Convert to fraction form
   1,501.22/2,071.64 = 871.75/x
3. Step 3: Cross multiply
   1,501.22x = 2,071.64 × 871.75
4. Step 4: Simplify right side
   1,501.22x = 1,805,952.17
5. Step 5: Solve for x
   x = 1,805,952.17/1,501.22
6. Step 6: Final answer
   x = 1,202.99