Finding the Fourth Proportional to 2,669.46, 4,002.30 and 913.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,669.46 : 4,002.30 = 913.62 : x
2. Step 2: Convert to fraction form
   2,669.46/4,002.30 = 913.62/x
3. Step 3: Cross multiply
   2,669.46x = 4,002.30 × 913.62
4. Step 4: Simplify right side
   2,669.46x = 3,656,581.33
5. Step 5: Solve for x
   x = 3,656,581.33/2,669.46
6. Step 6: Final answer
   x = 1,369.78