Finding the Fourth Proportional to 2,656.67, 3,985.22 and 807.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656.67 : 3,985.22 = 807.95 : x
2. Step 2: Convert to fraction form
   2,656.67/3,985.22 = 807.95/x
3. Step 3: Cross multiply
   2,656.67x = 3,985.22 × 807.95
4. Step 4: Simplify right side
   2,656.67x = 3,219,858.50
5. Step 5: Solve for x
   x = 3,219,858.50/2,656.67
6. Step 6: Final answer
   x = 1,211.99