Finding the Fourth Proportional to 1,003.33, 1,385.94 and 910.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.33 : 1,385.94 = 910.18 : x
2. Step 2: Convert to fraction form
   1,003.33/1,385.94 = 910.18/x
3. Step 3: Cross multiply
   1,003.33x = 1,385.94 × 910.18
4. Step 4: Simplify right side
   1,003.33x = 1,261,454.87
5. Step 5: Solve for x
   x = 1,261,454.87/1,003.33
6. Step 6: Final answer
   x = 1,257.27