Finding the Fourth Proportional to 2,386.82, 3,579.27 and 742.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.82 : 3,579.27 = 742.86 : x
2. Step 2: Convert to fraction form
   2,386.82/3,579.27 = 742.86/x
3. Step 3: Cross multiply
   2,386.82x = 3,579.27 × 742.86
4. Step 4: Simplify right side
   2,386.82x = 2,658,896.51
5. Step 5: Solve for x
   x = 2,658,896.51/2,386.82
6. Step 6: Final answer
   x = 1,113.99