Finding the Fourth Proportional to 1,886.42, 2,603.40 and 1,047.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.42 : 2,603.40 = 1,047.32 : x
2. Step 2: Convert to fraction form
   1,886.42/2,603.40 = 1,047.32/x
3. Step 3: Cross multiply
   1,886.42x = 2,603.40 × 1,047.32
4. Step 4: Simplify right side
   1,886.42x = 2,726,592.89
5. Step 5: Solve for x
   x = 2,726,592.89/1,886.42
6. Step 6: Final answer
   x = 1,445.38