Finding the Fourth Proportional to 1,886.63, 2,603.34 and 1,047.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.63 : 2,603.34 = 1,047.12 : x
2. Step 2: Convert to fraction form
   1,886.63/2,603.34 = 1,047.12/x
3. Step 3: Cross multiply
   1,886.63x = 2,603.34 × 1,047.12
4. Step 4: Simplify right side
   1,886.63x = 2,726,009.38
5. Step 5: Solve for x
   x = 2,726,009.38/1,886.63
6. Step 6: Final answer
   x = 1,444.91