Finding the Fourth Proportional to 2,403.41, 3,316.61 and 1,355.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,403.41 : 3,316.61 = 1,355.57 : x
2. Step 2: Convert to fraction form
   2,403.41/3,316.61 = 1,355.57/x
3. Step 3: Cross multiply
   2,403.41x = 3,316.61 × 1,355.57
4. Step 4: Simplify right side
   2,403.41x = 4,495,890.24
5. Step 5: Solve for x
   x = 4,495,890.24/2,403.41
6. Step 6: Final answer
   x = 1,870.63