Finding the Fourth Proportional to 3,826.90, 5,739.72 and 1,229.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,826.90 : 5,739.72 = 1,229.50 : x
2. Step 2: Convert to fraction form
   3,826.90/5,739.72 = 1,229.50/x
3. Step 3: Cross multiply
   3,826.90x = 5,739.72 × 1,229.50
4. Step 4: Simplify right side
   3,826.90x = 7,056,985.74
5. Step 5: Solve for x
   x = 7,056,985.74/3,826.90
6. Step 6: Final answer
   x = 1,844.05