Finding the Fourth Proportional to 2,365.56, 3,547.98 and 721.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,365.56 : 3,547.98 = 721.98 : x
2. Step 2: Convert to fraction form
   2,365.56/3,547.98 = 721.98/x
3. Step 3: Cross multiply
   2,365.56x = 3,547.98 × 721.98
4. Step 4: Simplify right side
   2,365.56x = 2,561,570.60
5. Step 5: Solve for x
   x = 2,561,570.60/2,365.56
6. Step 6: Final answer
   x = 1,082.86