Finding the Fourth Proportional to 2,103.30, 2,901.74 and 1,218.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.30 : 2,901.74 = 1,218.94 : x
2. Step 2: Convert to fraction form
   2,103.30/2,901.74 = 1,218.94/x
3. Step 3: Cross multiply
   2,103.30x = 2,901.74 × 1,218.94
4. Step 4: Simplify right side
   2,103.30x = 3,537,046.96
5. Step 5: Solve for x
   x = 3,537,046.96/2,103.30
6. Step 6: Final answer
   x = 1,681.67