Finding the Fourth Proportional to 2,211.56, 3,317.72 and 651.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211.56 : 3,317.72 = 651.52 : x
2. Step 2: Convert to fraction form
   2,211.56/3,317.72 = 651.52/x
3. Step 3: Cross multiply
   2,211.56x = 3,317.72 × 651.52
4. Step 4: Simplify right side
   2,211.56x = 2,161,560.93
5. Step 5: Solve for x
   x = 2,161,560.93/2,211.56
6. Step 6: Final answer
   x = 977.39