Finding the Fourth Proportional to 1,095.50, 1,511.42 and 623.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.50 : 1,511.42 = 623.34 : x
2. Step 2: Convert to fraction form
   1,095.50/1,511.42 = 623.34/x
3. Step 3: Cross multiply
   1,095.50x = 1,511.42 × 623.34
4. Step 4: Simplify right side
   1,095.50x = 942,125.43
5. Step 5: Solve for x
   x = 942,125.43/1,095.50
6. Step 6: Final answer
   x = 859.99