Finding the Fourth Proportional to 1,494.78, 2,241.78 and 714.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,494.78 : 2,241.78 = 714.72 : x
2. Step 2: Convert to fraction form
   1,494.78/2,241.78 = 714.72/x
3. Step 3: Cross multiply
   1,494.78x = 2,241.78 × 714.72
4. Step 4: Simplify right side
   1,494.78x = 1,602,245.00
5. Step 5: Solve for x
   x = 1,602,245.00/1,494.78
6. Step 6: Final answer
   x = 1,071.89