Finding the Fourth Proportional to 2,290.51, 3,435.98 and 647.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.51 : 3,435.98 = 647.10 : x
2. Step 2: Convert to fraction form
   2,290.51/3,435.98 = 647.10/x
3. Step 3: Cross multiply
   2,290.51x = 3,435.98 × 647.10
4. Step 4: Simplify right side
   2,290.51x = 2,223,422.66
5. Step 5: Solve for x
   x = 2,223,422.66/2,290.51
6. Step 6: Final answer
   x = 970.71