Finding the Fourth Proportional to 2,589.59, 3,884.84 and 947.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589.59 : 3,884.84 = 947.22 : x
2. Step 2: Convert to fraction form
   2,589.59/3,884.84 = 947.22/x
3. Step 3: Cross multiply
   2,589.59x = 3,884.84 × 947.22
4. Step 4: Simplify right side
   2,589.59x = 3,679,800.51
5. Step 5: Solve for x
   x = 3,679,800.51/2,589.59
6. Step 6: Final answer
   x = 1,421.00