Finding the Fourth Proportional to 1,411.43, 1,946.45 and 913.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.43 : 1,946.45 = 913.89 : x
2. Step 2: Convert to fraction form
   1,411.43/1,946.45 = 913.89/x
3. Step 3: Cross multiply
   1,411.43x = 1,946.45 × 913.89
4. Step 4: Simplify right side
   1,411.43x = 1,778,836.62
5. Step 5: Solve for x
   x = 1,778,836.62/1,411.43
6. Step 6: Final answer
   x = 1,260.31