Finding the Fourth Proportional to 1,085.67, 1,625.54 and 623.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.67 : 1,625.54 = 623.03 : x
2. Step 2: Convert to fraction form
   1,085.67/1,625.54 = 623.03/x
3. Step 3: Cross multiply
   1,085.67x = 1,625.54 × 623.03
4. Step 4: Simplify right side
   1,085.67x = 1,012,748.94
5. Step 5: Solve for x
   x = 1,012,748.94/1,085.67
6. Step 6: Final answer
   x = 932.83