Finding the Fourth Proportional to 2,101.72, 2,901.66 and 1,394.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.72 : 2,901.66 = 1,394.18 : x
2. Step 2: Convert to fraction form
   2,101.72/2,901.66 = 1,394.18/x
3. Step 3: Cross multiply
   2,101.72x = 2,901.66 × 1,394.18
4. Step 4: Simplify right side
   2,101.72x = 4,045,436.34
5. Step 5: Solve for x
   x = 4,045,436.34/2,101.72
6. Step 6: Final answer
   x = 1,924.82