Finding the Fourth Proportional to 1,342.30, 1,853 and 1,010.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.30 : 1,853 = 1,010.85 : x
2. Step 2: Convert to fraction form
   1,342.30/1,853 = 1,010.85/x
3. Step 3: Cross multiply
   1,342.30x = 1,853 × 1,010.85
4. Step 4: Simplify right side
   1,342.30x = 1,873,105.05
5. Step 5: Solve for x
   x = 1,873,105.05/1,342.30
6. Step 6: Final answer
   x = 1,395.44