Finding the Fourth Proportional to 2,561.52, 3,841.47 and 917.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.52 : 3,841.47 = 917.63 : x
2. Step 2: Convert to fraction form
   2,561.52/3,841.47 = 917.63/x
3. Step 3: Cross multiply
   2,561.52x = 3,841.47 × 917.63
4. Step 4: Simplify right side
   2,561.52x = 3,525,048.12
5. Step 5: Solve for x
   x = 3,525,048.12/2,561.52
6. Step 6: Final answer
   x = 1,376.15