Finding the Fourth Proportional to 2,104.69, 3,156.30 and 623.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.69 : 3,156.30 = 623.50 : x
2. Step 2: Convert to fraction form
   2,104.69/3,156.30 = 623.50/x
3. Step 3: Cross multiply
   2,104.69x = 3,156.30 × 623.50
4. Step 4: Simplify right side
   2,104.69x = 1,967,953.05
5. Step 5: Solve for x
   x = 1,967,953.05/2,104.69
6. Step 6: Final answer
   x = 935.03