Finding the Fourth Proportional to 1,992.18, 2,748.56 and 1,205.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,992.18 : 2,748.56 = 1,205.94 : x
2. Step 2: Convert to fraction form
   1,992.18/2,748.56 = 1,205.94/x
3. Step 3: Cross multiply
   1,992.18x = 2,748.56 × 1,205.94
4. Step 4: Simplify right side
   1,992.18x = 3,314,592.42
5. Step 5: Solve for x
   x = 3,314,592.42/1,992.18
6. Step 6: Final answer
   x = 1,663.80