Finding the Fourth Proportional to 1,899.72, 2,845.56 and 1,206.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.72 : 2,845.56 = 1,206.02 : x
2. Step 2: Convert to fraction form
   1,899.72/2,845.56 = 1,206.02/x
3. Step 3: Cross multiply
   1,899.72x = 2,845.56 × 1,206.02
4. Step 4: Simplify right side
   1,899.72x = 3,431,802.27
5. Step 5: Solve for x
   x = 3,431,802.27/1,899.72
6. Step 6: Final answer
   x = 1,806.48