Finding the Fourth Proportional to 1,906.65, 2,854.58 and 1,211.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.65 : 2,854.58 = 1,211.59 : x
2. Step 2: Convert to fraction form
   1,906.65/2,854.58 = 1,211.59/x
3. Step 3: Cross multiply
   1,906.65x = 2,854.58 × 1,211.59
4. Step 4: Simplify right side
   1,906.65x = 3,458,574.52
5. Step 5: Solve for x
   x = 3,458,574.52/1,906.65
6. Step 6: Final answer
   x = 1,813.96