Finding the Fourth Proportional to 2,561.31, 3,841.02 and 917.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.31 : 3,841.02 = 917.46 : x
2. Step 2: Convert to fraction form
   2,561.31/3,841.02 = 917.46/x
3. Step 3: Cross multiply
   2,561.31x = 3,841.02 × 917.46
4. Step 4: Simplify right side
   2,561.31x = 3,523,982.21
5. Step 5: Solve for x
   x = 3,523,982.21/2,561.31
6. Step 6: Final answer
   x = 1,375.85