Finding the Fourth Proportional to 1,857.32, 2,784.15 and 1,199.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,857.32 : 2,784.15 = 1,199.09 : x
2. Step 2: Convert to fraction form
   1,857.32/2,784.15 = 1,199.09/x
3. Step 3: Cross multiply
   1,857.32x = 2,784.15 × 1,199.09
4. Step 4: Simplify right side
   1,857.32x = 3,338,446.42
5. Step 5: Solve for x
   x = 3,338,446.42/1,857.32
6. Step 6: Final answer
   x = 1,797.45