Finding the Fourth Proportional to 1,648.78, 2,274.95 and 1,010.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.78 : 2,274.95 = 1,010.86 : x
2. Step 2: Convert to fraction form
   1,648.78/2,274.95 = 1,010.86/x
3. Step 3: Cross multiply
   1,648.78x = 2,274.95 × 1,010.86
4. Step 4: Simplify right side
   1,648.78x = 2,299,654.69
5. Step 5: Solve for x
   x = 2,299,654.69/1,648.78
6. Step 6: Final answer
   x = 1,394.76