Finding the Fourth Proportional to 2,403.42, 3,316.72 and 1,355.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,403.42 : 3,316.72 = 1,355.48 : x
2. Step 2: Convert to fraction form
   2,403.42/3,316.72 = 1,355.48/x
3. Step 3: Cross multiply
   2,403.42x = 3,316.72 × 1,355.48
4. Step 4: Simplify right side
   2,403.42x = 4,495,765.10
5. Step 5: Solve for x
   x = 4,495,765.10/2,403.42
6. Step 6: Final answer
   x = 1,870.57