Finding the Fourth Proportional to 1,889.61, 2,606.82 and 1,103.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,889.61 : 2,606.82 = 1,103.31 : x
2. Step 2: Convert to fraction form
   1,889.61/2,606.82 = 1,103.31/x
3. Step 3: Cross multiply
   1,889.61x = 2,606.82 × 1,103.31
4. Step 4: Simplify right side
   1,889.61x = 2,876,130.57
5. Step 5: Solve for x
   x = 2,876,130.57/1,889.61
6. Step 6: Final answer
   x = 1,522.08