Finding the Fourth Proportional to 1,105.86, 1,526.10 and 608.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.86 : 1,526.10 = 608.48 : x
2. Step 2: Convert to fraction form
   1,105.86/1,526.10 = 608.48/x
3. Step 3: Cross multiply
   1,105.86x = 1,526.10 × 608.48
4. Step 4: Simplify right side
   1,105.86x = 928,602.86
5. Step 5: Solve for x
   x = 928,602.86/1,105.86
6. Step 6: Final answer
   x = 839.71