Finding the Fourth Proportional to 1,055.03, 1,455.98 and 635.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.03 : 1,455.98 = 635.31 : x
2. Step 2: Convert to fraction form
   1,055.03/1,455.98 = 635.31/x
3. Step 3: Cross multiply
   1,055.03x = 1,455.98 × 635.31
4. Step 4: Simplify right side
   1,055.03x = 924,995.48
5. Step 5: Solve for x
   x = 924,995.48/1,055.03
6. Step 6: Final answer
   x = 876.75