Finding the Fourth Proportional to 1,890.45, 2,608.82 and 1,104.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.45 : 2,608.82 = 1,104.34 : x
2. Step 2: Convert to fraction form
   1,890.45/2,608.82 = 1,104.34/x
3. Step 3: Cross multiply
   1,890.45x = 2,608.82 × 1,104.34
4. Step 4: Simplify right side
   1,890.45x = 2,881,024.28
5. Step 5: Solve for x
   x = 2,881,024.28/1,890.45
6. Step 6: Final answer
   x = 1,523.99