Finding the Fourth Proportional to 2,403.47, 3,316.53 and 1,408.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,403.47 : 3,316.53 = 1,408.55 : x
2. Step 2: Convert to fraction form
   2,403.47/3,316.53 = 1,408.55/x
3. Step 3: Cross multiply
   2,403.47x = 3,316.53 × 1,408.55
4. Step 4: Simplify right side
   2,403.47x = 4,671,498.33
5. Step 5: Solve for x
   x = 4,671,498.33/2,403.47
6. Step 6: Final answer
   x = 1,943.65