Finding the Fourth Proportional to 1,085.98, 1,627.72 and 469.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.98 : 1,627.72 = 469.07 : x
2. Step 2: Convert to fraction form
   1,085.98/1,627.72 = 469.07/x
3. Step 3: Cross multiply
   1,085.98x = 1,627.72 × 469.07
4. Step 4: Simplify right side
   1,085.98x = 763,508.15
5. Step 5: Solve for x
   x = 763,508.15/1,085.98
6. Step 6: Final answer
   x = 703.06