Finding the Fourth Proportional to 1,985.82, 2,738.42 and 1,199.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985.82 : 2,738.42 = 1,199.40 : x
2. Step 2: Convert to fraction form
   1,985.82/2,738.42 = 1,199.40/x
3. Step 3: Cross multiply
   1,985.82x = 2,738.42 × 1,199.40
4. Step 4: Simplify right side
   1,985.82x = 3,284,460.95
5. Step 5: Solve for x
   x = 3,284,460.95/1,985.82
6. Step 6: Final answer
   x = 1,653.96