Finding the Fourth Proportional to 1,340.52, 1,853.34 and 1,010.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.52 : 1,853.34 = 1,010.64 : x
2. Step 2: Convert to fraction form
   1,340.52/1,853.34 = 1,010.64/x
3. Step 3: Cross multiply
   1,340.52x = 1,853.34 × 1,010.64
4. Step 4: Simplify right side
   1,340.52x = 1,873,059.54
5. Step 5: Solve for x
   x = 1,873,059.54/1,340.52
6. Step 6: Final answer
   x = 1,397.26