Finding the Fourth Proportional to 1,054.91, 1,455.83 and 635.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.91 : 1,455.83 = 635.33 : x
2. Step 2: Convert to fraction form
   1,054.91/1,455.83 = 635.33/x
3. Step 3: Cross multiply
   1,054.91x = 1,455.83 × 635.33
4. Step 4: Simplify right side
   1,054.91x = 924,922.02
5. Step 5: Solve for x
   x = 924,922.02/1,054.91
6. Step 6: Final answer
   x = 876.78