Finding the Fourth Proportional to 2,653.57, 3,970.63 and 1,785.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.57 : 3,970.63 = 1,785.25 : x
2. Step 2: Convert to fraction form
   2,653.57/3,970.63 = 1,785.25/x
3. Step 3: Cross multiply
   2,653.57x = 3,970.63 × 1,785.25
4. Step 4: Simplify right side
   2,653.57x = 7,088,567.21
5. Step 5: Solve for x
   x = 7,088,567.21/2,653.57
6. Step 6: Final answer
   x = 2,671.33