Finding the Fourth Proportional to 1,068.52, 1,474.45 and 620.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.52 : 1,474.45 = 620.32 : x
2. Step 2: Convert to fraction form
   1,068.52/1,474.45 = 620.32/x
3. Step 3: Cross multiply
   1,068.52x = 1,474.45 × 620.32
4. Step 4: Simplify right side
   1,068.52x = 914,630.82
5. Step 5: Solve for x
   x = 914,630.82/1,068.52
6. Step 6: Final answer
   x = 855.98