Finding the Fourth Proportional to 2,662.89, 3,994.52 and 907.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.89 : 3,994.52 = 907.17 : x
2. Step 2: Convert to fraction form
   2,662.89/3,994.52 = 907.17/x
3. Step 3: Cross multiply
   2,662.89x = 3,994.52 × 907.17
4. Step 4: Simplify right side
   2,662.89x = 3,623,704.17
5. Step 5: Solve for x
   x = 3,623,704.17/2,662.89
6. Step 6: Final answer
   x = 1,360.82