Finding the Fourth Proportional to 2,005.72, 3,008.70 and 773.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,005.72 : 3,008.70 = 773.13 : x
2. Step 2: Convert to fraction form
   2,005.72/3,008.70 = 773.13/x
3. Step 3: Cross multiply
   2,005.72x = 3,008.70 × 773.13
4. Step 4: Simplify right side
   2,005.72x = 2,326,123.83
5. Step 5: Solve for x
   x = 2,326,123.83/2,005.72
6. Step 6: Final answer
   x = 1,159.75