Finding the Fourth Proportional to 1,501.25, 2,071.71 and 871.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.25 : 2,071.71 = 871.91 : x
2. Step 2: Convert to fraction form
   1,501.25/2,071.71 = 871.91/x
3. Step 3: Cross multiply
   1,501.25x = 2,071.71 × 871.91
4. Step 4: Simplify right side
   1,501.25x = 1,806,334.31
5. Step 5: Solve for x
   x = 1,806,334.31/1,501.25
6. Step 6: Final answer
   x = 1,203.22