Finding the Fourth Proportional to 1,100.42, 1,518.72 and 634.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.42 : 1,518.72 = 634.67 : x
2. Step 2: Convert to fraction form
   1,100.42/1,518.72 = 634.67/x
3. Step 3: Cross multiply
   1,100.42x = 1,518.72 × 634.67
4. Step 4: Simplify right side
   1,100.42x = 963,886.02
5. Step 5: Solve for x
   x = 963,886.02/1,100.42
6. Step 6: Final answer
   x = 875.93