Finding the Fourth Proportional to 3,926.17, 5,889.86 and 1,328.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,926.17 : 5,889.86 = 1,328.50 : x
2. Step 2: Convert to fraction form
   3,926.17/5,889.86 = 1,328.50/x
3. Step 3: Cross multiply
   3,926.17x = 5,889.86 × 1,328.50
4. Step 4: Simplify right side
   3,926.17x = 7,824,679.01
5. Step 5: Solve for x
   x = 7,824,679.01/3,926.17
6. Step 6: Final answer
   x = 1,992.95