Finding the Fourth Proportional to 2,403.46, 3,316.89 and 1,355.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,403.46 : 3,316.89 = 1,355.50 : x
2. Step 2: Convert to fraction form
   2,403.46/3,316.89 = 1,355.50/x
3. Step 3: Cross multiply
   2,403.46x = 3,316.89 × 1,355.50
4. Step 4: Simplify right side
   2,403.46x = 4,496,044.40
5. Step 5: Solve for x
   x = 4,496,044.40/2,403.46
6. Step 6: Final answer
   x = 1,870.65