Finding the Fourth Proportional to 1,100.56, 1,518.72 and 634.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.56 : 1,518.72 = 634.96 : x
2. Step 2: Convert to fraction form
   1,100.56/1,518.72 = 634.96/x
3. Step 3: Cross multiply
   1,100.56x = 1,518.72 × 634.96
4. Step 4: Simplify right side
   1,100.56x = 964,326.45
5. Step 5: Solve for x
   x = 964,326.45/1,100.56
6. Step 6: Final answer
   x = 876.21