Finding the Fourth Proportional to 2,098.28, 2,894.86 and 1,213.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,098.28 : 2,894.86 = 1,213.76 : x
2. Step 2: Convert to fraction form
   2,098.28/2,894.86 = 1,213.76/x
3. Step 3: Cross multiply
   2,098.28x = 2,894.86 × 1,213.76
4. Step 4: Simplify right side
   2,098.28x = 3,513,665.27
5. Step 5: Solve for x
   x = 3,513,665.27/2,098.28
6. Step 6: Final answer
   x = 1,674.55