Finding the Fourth Proportional to 1,371.83, 2,052.89 and 1,209.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371.83 : 2,052.89 = 1,209.83 : x
2. Step 2: Convert to fraction form
   1,371.83/2,052.89 = 1,209.83/x
3. Step 3: Cross multiply
   1,371.83x = 2,052.89 × 1,209.83
4. Step 4: Simplify right side
   1,371.83x = 2,483,641.86
5. Step 5: Solve for x
   x = 2,483,641.86/1,371.83
6. Step 6: Final answer
   x = 1,810.46