Finding the Fourth Proportional to 1,101.77, 1,520.42 and 604.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.77 : 1,520.42 = 604.43 : x
2. Step 2: Convert to fraction form
   1,101.77/1,520.42 = 604.43/x
3. Step 3: Cross multiply
   1,101.77x = 1,520.42 × 604.43
4. Step 4: Simplify right side
   1,101.77x = 918,979.86
5. Step 5: Solve for x
   x = 918,979.86/1,101.77
6. Step 6: Final answer
   x = 834.10