Finding the Fourth Proportional to 2,877.37, 4,317.05 and 1,318.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,877.37 : 4,317.05 = 1,318.03 : x
2. Step 2: Convert to fraction form
   2,877.37/4,317.05 = 1,318.03/x
3. Step 3: Cross multiply
   2,877.37x = 4,317.05 × 1,318.03
4. Step 4: Simplify right side
   2,877.37x = 5,690,001.41
5. Step 5: Solve for x
   x = 5,690,001.41/2,877.37
6. Step 6: Final answer
   x = 1,977.50