Finding the Fourth Proportional to 1,364.61, 2,047.28 and 671.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,364.61 : 2,047.28 = 671.25 : x
2. Step 2: Convert to fraction form
   1,364.61/2,047.28 = 671.25/x
3. Step 3: Cross multiply
   1,364.61x = 2,047.28 × 671.25
4. Step 4: Simplify right side
   1,364.61x = 1,374,233.34
5. Step 5: Solve for x
   x = 1,374,233.34/1,364.61
6. Step 6: Final answer
   x = 1,007.05