Finding the Fourth Proportional to 2,103.08, 2,901.48 and 1,218.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.08 : 2,901.48 = 1,218.56 : x
2. Step 2: Convert to fraction form
   2,103.08/2,901.48 = 1,218.56/x
3. Step 3: Cross multiply
   2,103.08x = 2,901.48 × 1,218.56
4. Step 4: Simplify right side
   2,103.08x = 3,535,627.47
5. Step 5: Solve for x
   x = 3,535,627.47/2,103.08
6. Step 6: Final answer
   x = 1,681.17