Finding the Fourth Proportional to 3,561.05, 5,341.88 and 928.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561.05 : 5,341.88 = 928.91 : x
2. Step 2: Convert to fraction form
   3,561.05/5,341.88 = 928.91/x
3. Step 3: Cross multiply
   3,561.05x = 5,341.88 × 928.91
4. Step 4: Simplify right side
   3,561.05x = 4,962,108.04
5. Step 5: Solve for x
   x = 4,962,108.04/3,561.05
6. Step 6: Final answer
   x = 1,393.44