Finding the Fourth Proportional to 2,487.85, 3,433.15 and 1,368.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.85 : 3,433.15 = 1,368.72 : x
2. Step 2: Convert to fraction form
   2,487.85/3,433.15 = 1,368.72/x
3. Step 3: Cross multiply
   2,487.85x = 3,433.15 × 1,368.72
4. Step 4: Simplify right side
   2,487.85x = 4,699,021.07
5. Step 5: Solve for x
   x = 4,699,021.07/2,487.85
6. Step 6: Final answer
   x = 1,888.79