Finding the Fourth Proportional to 6,404.50, 9,607.38 and 1,787.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,404.50 : 9,607.38 = 1,787.50 : x
2. Step 2: Convert to fraction form
   6,404.50/9,607.38 = 1,787.50/x
3. Step 3: Cross multiply
   6,404.50x = 9,607.38 × 1,787.50
4. Step 4: Simplify right side
   6,404.50x = 17,173,191.75
5. Step 5: Solve for x
   x = 17,173,191.75/6,404.50
6. Step 6: Final answer
   x = 2,681.43