Finding the Fourth Proportional to 1,101.86, 1,520.54 and 604.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.86 : 1,520.54 = 604.50 : x
2. Step 2: Convert to fraction form
   1,101.86/1,520.54 = 604.50/x
3. Step 3: Cross multiply
   1,101.86x = 1,520.54 × 604.50
4. Step 4: Simplify right side
   1,101.86x = 919,166.43
5. Step 5: Solve for x
   x = 919,166.43/1,101.86
6. Step 6: Final answer
   x = 834.20