Finding the Fourth Proportional to 2,045.98, 2,823.38 and 1,206.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.98 : 2,823.38 = 1,206.72 : x
2. Step 2: Convert to fraction form
   2,045.98/2,823.38 = 1,206.72/x
3. Step 3: Cross multiply
   2,045.98x = 2,823.38 × 1,206.72
4. Step 4: Simplify right side
   2,045.98x = 3,407,038.94
5. Step 5: Solve for x
   x = 3,407,038.94/2,045.98
6. Step 6: Final answer
   x = 1,665.23