Finding the Fourth Proportional to 1,348.61, 2,022.18 and 909.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,348.61 : 2,022.18 = 909.86 : x
2. Step 2: Convert to fraction form
   1,348.61/2,022.18 = 909.86/x
3. Step 3: Cross multiply
   1,348.61x = 2,022.18 × 909.86
4. Step 4: Simplify right side
   1,348.61x = 1,839,900.69
5. Step 5: Solve for x
   x = 1,839,900.69/1,348.61
6. Step 6: Final answer
   x = 1,364.29