Finding the Fourth Proportional to 1,886.50, 2,603.40 and 1,047.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.50 : 2,603.40 = 1,047.22 : x
2. Step 2: Convert to fraction form
   1,886.50/2,603.40 = 1,047.22/x
3. Step 3: Cross multiply
   1,886.50x = 2,603.40 × 1,047.22
4. Step 4: Simplify right side
   1,886.50x = 2,726,332.55
5. Step 5: Solve for x
   x = 2,726,332.55/1,886.50
6. Step 6: Final answer
   x = 1,445.18