Finding the Fourth Proportional to 1,889.50, 2,605.83 and 1,225.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,889.50 : 2,605.83 = 1,225.69 : x
2. Step 2: Convert to fraction form
   1,889.50/2,605.83 = 1,225.69/x
3. Step 3: Cross multiply
   1,889.50x = 2,605.83 × 1,225.69
4. Step 4: Simplify right side
   1,889.50x = 3,193,939.77
5. Step 5: Solve for x
   x = 3,193,939.77/1,889.50
6. Step 6: Final answer
   x = 1,690.36