Finding the Fourth Proportional to 1,345.16, 2,016.71 and 614.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.16 : 2,016.71 = 614.22 : x
2. Step 2: Convert to fraction form
   1,345.16/2,016.71 = 614.22/x
3. Step 3: Cross multiply
   1,345.16x = 2,016.71 × 614.22
4. Step 4: Simplify right side
   1,345.16x = 1,238,700.55
5. Step 5: Solve for x
   x = 1,238,700.55/1,345.16
6. Step 6: Final answer
   x = 920.86