Finding the Fourth Proportional to 1,886.63, 2,603.72 and 1,100.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.63 : 2,603.72 = 1,100.73 : x
2. Step 2: Convert to fraction form
   1,886.63/2,603.72 = 1,100.73/x
3. Step 3: Cross multiply
   1,886.63x = 2,603.72 × 1,100.73
4. Step 4: Simplify right side
   1,886.63x = 2,865,987.21
5. Step 5: Solve for x
   x = 2,865,987.21/1,886.63
6. Step 6: Final answer
   x = 1,519.11