Finding the Fourth Proportional to 1,002.33, 1,384.56 and 909.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.33 : 1,384.56 = 909.18 : x
2. Step 2: Convert to fraction form
   1,002.33/1,384.56 = 909.18/x
3. Step 3: Cross multiply
   1,002.33x = 1,384.56 × 909.18
4. Step 4: Simplify right side
   1,002.33x = 1,258,814.26
5. Step 5: Solve for x
   x = 1,258,814.26/1,002.33
6. Step 6: Final answer
   x = 1,255.89