Finding the Fourth Proportional to 2,166.89, 3,248.28 and 705.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166.89 : 3,248.28 = 705.02 : x
2. Step 2: Convert to fraction form
   2,166.89/3,248.28 = 705.02/x
3. Step 3: Cross multiply
   2,166.89x = 3,248.28 × 705.02
4. Step 4: Simplify right side
   2,166.89x = 2,290,086.12
5. Step 5: Solve for x
   x = 2,290,086.12/2,166.89
6. Step 6: Final answer
   x = 1,056.86