Finding the Fourth Proportional to 2,010.69, 3,015.89 and 623.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.69 : 3,015.89 = 623.99 : x
2. Step 2: Convert to fraction form
   2,010.69/3,015.89 = 623.99/x
3. Step 3: Cross multiply
   2,010.69x = 3,015.89 × 623.99
4. Step 4: Simplify right side
   2,010.69x = 1,881,894.30
5. Step 5: Solve for x
   x = 1,881,894.30/2,010.69
6. Step 6: Final answer
   x = 935.94