Finding the Fourth Proportional to 2,113.37, 3,169.51 and 651.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.37 : 3,169.51 = 651.72 : x
2. Step 2: Convert to fraction form
   2,113.37/3,169.51 = 651.72/x
3. Step 3: Cross multiply
   2,113.37x = 3,169.51 × 651.72
4. Step 4: Simplify right side
   2,113.37x = 2,065,631.43
5. Step 5: Solve for x
   x = 2,065,631.43/2,113.37
6. Step 6: Final answer
   x = 977.41