Finding the Fourth Proportional to 1,910.21, 2,863.29 and 1,214.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,910.21 : 2,863.29 = 1,214.69 : x
2. Step 2: Convert to fraction form
   1,910.21/2,863.29 = 1,214.69/x
3. Step 3: Cross multiply
   1,910.21x = 2,863.29 × 1,214.69
4. Step 4: Simplify right side
   1,910.21x = 3,478,009.73
5. Step 5: Solve for x
   x = 3,478,009.73/1,910.21
6. Step 6: Final answer
   x = 1,820.75