Finding the Fourth Proportional to 1,889.20, 2,607.06 and 1,103.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,889.20 : 2,607.06 = 1,103.50 : x
2. Step 2: Convert to fraction form
   1,889.20/2,607.06 = 1,103.50/x
3. Step 3: Cross multiply
   1,889.20x = 2,607.06 × 1,103.50
4. Step 4: Simplify right side
   1,889.20x = 2,876,890.71
5. Step 5: Solve for x
   x = 2,876,890.71/1,889.20
6. Step 6: Final answer
   x = 1,522.81