Finding the Fourth Proportional to 2,102.37, 2,901.25 and 1,218.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,102.37 : 2,901.25 = 1,218.15 : x
2. Step 2: Convert to fraction form
   2,102.37/2,901.25 = 1,218.15/x
3. Step 3: Cross multiply
   2,102.37x = 2,901.25 × 1,218.15
4. Step 4: Simplify right side
   2,102.37x = 3,534,157.69
5. Step 5: Solve for x
   x = 3,534,157.69/2,102.37
6. Step 6: Final answer
   x = 1,681.04