Finding the Fourth Proportional to 1,436.24, 1,981.54 and 876.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.24 : 1,981.54 = 876.51 : x
2. Step 2: Convert to fraction form
   1,436.24/1,981.54 = 876.51/x
3. Step 3: Cross multiply
   1,436.24x = 1,981.54 × 876.51
4. Step 4: Simplify right side
   1,436.24x = 1,736,839.63
5. Step 5: Solve for x
   x = 1,736,839.63/1,436.24
6. Step 6: Final answer
   x = 1,209.30