Finding the Fourth Proportional to 2,653.79, 3,980.61 and 706.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.79 : 3,980.61 = 706.01 : x
2. Step 2: Convert to fraction form
   2,653.79/3,980.61 = 706.01/x
3. Step 3: Cross multiply
   2,653.79x = 3,980.61 × 706.01
4. Step 4: Simplify right side
   2,653.79x = 2,810,330.56
5. Step 5: Solve for x
   x = 2,810,330.56/2,653.79
6. Step 6: Final answer
   x = 1,058.99