Finding the Fourth Proportional to 5,223.59, 7,835.43 and 1,328.00

Step by Step Solution

1. Step 1: Write the proportion equation
   5,223.59 : 7,835.43 = 1,328.00 : x
2. Step 2: Convert to fraction form
   5,223.59/7,835.43 = 1,328.00/x
3. Step 3: Cross multiply
   5,223.59x = 7,835.43 × 1,328.00
4. Step 4: Simplify right side
   5,223.59x = 10,405,416.84
5. Step 5: Solve for x
   x = 10,405,416.84/5,223.59
6. Step 6: Final answer
   x = 1,992.01