Finding the Fourth Proportional to 1,419.84, 1,960.32 and 916.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.84 : 1,960.32 = 916.62 : x
2. Step 2: Convert to fraction form
   1,419.84/1,960.32 = 916.62/x
3. Step 3: Cross multiply
   1,419.84x = 1,960.32 × 916.62
4. Step 4: Simplify right side
   1,419.84x = 1,796,868.52
5. Step 5: Solve for x
   x = 1,796,868.52/1,419.84
6. Step 6: Final answer
   x = 1,265.54