Finding the Fourth Proportional to 1,151.96, 1,719.58 and 986.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.96 : 1,719.58 = 986.72 : x
2. Step 2: Convert to fraction form
   1,151.96/1,719.58 = 986.72/x
3. Step 3: Cross multiply
   1,151.96x = 1,719.58 × 986.72
4. Step 4: Simplify right side
   1,151.96x = 1,696,743.98
5. Step 5: Solve for x
   x = 1,696,743.98/1,151.96
6. Step 6: Final answer
   x = 1,472.92