Finding the Fourth Proportional to 1,076.23, 1,613.49 and 491.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.23 : 1,613.49 = 491.50 : x
2. Step 2: Convert to fraction form
   1,076.23/1,613.49 = 491.50/x
3. Step 3: Cross multiply
   1,076.23x = 1,613.49 × 491.50
4. Step 4: Simplify right side
   1,076.23x = 793,030.34
5. Step 5: Solve for x
   x = 793,030.34/1,076.23
6. Step 6: Final answer
   x = 736.86