Finding the Fourth Proportional to 2,132.94, 3,199.78 and 1,210.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,132.94 : 3,199.78 = 1,210.30 : x
2. Step 2: Convert to fraction form
   2,132.94/3,199.78 = 1,210.30/x
3. Step 3: Cross multiply
   2,132.94x = 3,199.78 × 1,210.30
4. Step 4: Simplify right side
   2,132.94x = 3,872,693.73
5. Step 5: Solve for x
   x = 3,872,693.73/2,132.94
6. Step 6: Final answer
   x = 1,815.66