Finding the Fourth Proportional to 1,086.17, 1,627.72 and 623.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.17 : 1,627.72 = 623.26 : x
2. Step 2: Convert to fraction form
   1,086.17/1,627.72 = 623.26/x
3. Step 3: Cross multiply
   1,086.17x = 1,627.72 × 623.26
4. Step 4: Simplify right side
   1,086.17x = 1,014,492.77
5. Step 5: Solve for x
   x = 1,014,492.77/1,086.17
6. Step 6: Final answer
   x = 934.01