Finding the Fourth Proportional to 2,445.85, 3,668.54 and 690.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,445.85 : 3,668.54 = 690.83 : x
2. Step 2: Convert to fraction form
   2,445.85/3,668.54 = 690.83/x
3. Step 3: Cross multiply
   2,445.85x = 3,668.54 × 690.83
4. Step 4: Simplify right side
   2,445.85x = 2,534,333.33
5. Step 5: Solve for x
   x = 2,534,333.33/2,445.85
6. Step 6: Final answer
   x = 1,036.18