Finding the Fourth Proportional to 3,900.83, 5,850.50 and 1,126.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,900.83 : 5,850.50 = 1,126.80 : x
2. Step 2: Convert to fraction form
   3,900.83/5,850.50 = 1,126.80/x
3. Step 3: Cross multiply
   3,900.83x = 5,850.50 × 1,126.80
4. Step 4: Simplify right side
   3,900.83x = 6,592,337.77
5. Step 5: Solve for x
   x = 6,592,337.77/3,900.83
6. Step 6: Final answer
   x = 1,689.99