Finding the Fourth Proportional to 1,068.35, 1,473.91 and 648.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.35 : 1,473.91 = 648.55 : x
2. Step 2: Convert to fraction form
   1,068.35/1,473.91 = 648.55/x
3. Step 3: Cross multiply
   1,068.35x = 1,473.91 × 648.55
4. Step 4: Simplify right side
   1,068.35x = 955,899.02
5. Step 5: Solve for x
   x = 955,899.02/1,068.35
6. Step 6: Final answer
   x = 894.75