Finding the Fourth Proportional to 2,386.01, 3,578.56 and 742.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.01 : 3,578.56 = 742.58 : x
2. Step 2: Convert to fraction form
   2,386.01/3,578.56 = 742.58/x
3. Step 3: Cross multiply
   2,386.01x = 3,578.56 × 742.58
4. Step 4: Simplify right side
   2,386.01x = 2,657,347.34
5. Step 5: Solve for x
   x = 2,657,347.34/2,386.01
6. Step 6: Final answer
   x = 1,113.72