Finding the Fourth Proportional to 1,705.62, 2,351.25 and 1,206.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,705.62 : 2,351.25 = 1,206.72 : x
2. Step 2: Convert to fraction form
   1,705.62/2,351.25 = 1,206.72/x
3. Step 3: Cross multiply
   1,705.62x = 2,351.25 × 1,206.72
4. Step 4: Simplify right side
   1,705.62x = 2,837,300.40
5. Step 5: Solve for x
   x = 2,837,300.40/1,705.62
6. Step 6: Final answer
   x = 1,663.50