Finding the Fourth Proportional to 3,540.35, 5,310.45 and 907.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,540.35 : 5,310.45 = 907.83 : x
2. Step 2: Convert to fraction form
   3,540.35/5,310.45 = 907.83/x
3. Step 3: Cross multiply
   3,540.35x = 5,310.45 × 907.83
4. Step 4: Simplify right side
   3,540.35x = 4,820,985.82
5. Step 5: Solve for x
   x = 4,820,985.82/3,540.35
6. Step 6: Final answer
   x = 1,361.72