Finding the Fourth Proportional to 1,411.77, 1,946.97 and 913.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.77 : 1,946.97 = 913.89 : x
2. Step 2: Convert to fraction form
   1,411.77/1,946.97 = 913.89/x
3. Step 3: Cross multiply
   1,411.77x = 1,946.97 × 913.89
4. Step 4: Simplify right side
   1,411.77x = 1,779,311.55
5. Step 5: Solve for x
   x = 1,779,311.55/1,411.77
6. Step 6: Final answer
   x = 1,260.34