Finding the Fourth Proportional to 1,345.10, 2,016.40 and 934.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.10 : 2,016.40 = 934.42 : x
2. Step 2: Convert to fraction form
   1,345.10/2,016.40 = 934.42/x
3. Step 3: Cross multiply
   1,345.10x = 2,016.40 × 934.42
4. Step 4: Simplify right side
   1,345.10x = 1,884,164.49
5. Step 5: Solve for x
   x = 1,884,164.49/1,345.10
6. Step 6: Final answer
   x = 1,400.76