Finding the Fourth Proportional to 1,055.32, 1,456.50 and 613.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.32 : 1,456.50 = 613.48 : x
2. Step 2: Convert to fraction form
   1,055.32/1,456.50 = 613.48/x
3. Step 3: Cross multiply
   1,055.32x = 1,456.50 × 613.48
4. Step 4: Simplify right side
   1,055.32x = 893,533.62
5. Step 5: Solve for x
   x = 893,533.62/1,055.32
6. Step 6: Final answer
   x = 846.69