Finding the Fourth Proportional to 1,985.01, 2,738.91 and 1,199.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985.01 : 2,738.91 = 1,199.05 : x
2. Step 2: Convert to fraction form
   1,985.01/2,738.91 = 1,199.05/x
3. Step 3: Cross multiply
   1,985.01x = 2,738.91 × 1,199.05
4. Step 4: Simplify right side
   1,985.01x = 3,284,103.09
5. Step 5: Solve for x
   x = 3,284,103.09/1,985.01
6. Step 6: Final answer
   x = 1,654.45