Finding the Fourth Proportional to 6,488.21, 9,730.53 and 1,807.86

Step by Step Solution

1. Step 1: Write the proportion equation
   6,488.21 : 9,730.53 = 1,807.86 : x
2. Step 2: Convert to fraction form
   6,488.21/9,730.53 = 1,807.86/x
3. Step 3: Cross multiply
   6,488.21x = 9,730.53 × 1,807.86
4. Step 4: Simplify right side
   6,488.21x = 17,591,459.89
5. Step 5: Solve for x
   x = 17,591,459.89/6,488.21
6. Step 6: Final answer
   x = 2,711.29