Finding the Fourth Proportional to 1,265.61, 1,895.48 and 1,109.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,265.61 : 1,895.48 = 1,109.89 : x
2. Step 2: Convert to fraction form
   1,265.61/1,895.48 = 1,109.89/x
3. Step 3: Cross multiply
   1,265.61x = 1,895.48 × 1,109.89
4. Step 4: Simplify right side
   1,265.61x = 2,103,774.30
5. Step 5: Solve for x
   x = 2,103,774.30/1,265.61
6. Step 6: Final answer
   x = 1,662.26