Finding the Fourth Proportional to 2,145.83, 2,961.18 and 1,214.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.83 : 2,961.18 = 1,214.33 : x
2. Step 2: Convert to fraction form
   2,145.83/2,961.18 = 1,214.33/x
3. Step 3: Cross multiply
   2,145.83x = 2,961.18 × 1,214.33
4. Step 4: Simplify right side
   2,145.83x = 3,595,849.71
5. Step 5: Solve for x
   x = 3,595,849.71/2,145.83
6. Step 6: Final answer
   x = 1,675.74