Finding the Fourth Proportional to 2,487.02, 3,727.22 and 1,316.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.02 : 3,727.22 = 1,316.78 : x
2. Step 2: Convert to fraction form
   2,487.02/3,727.22 = 1,316.78/x
3. Step 3: Cross multiply
   2,487.02x = 3,727.22 × 1,316.78
4. Step 4: Simplify right side
   2,487.02x = 4,907,928.75
5. Step 5: Solve for x
   x = 4,907,928.75/2,487.02
6. Step 6: Final answer
   x = 1,973.42