Finding the Fourth Proportional to 1,085.86, 1,627.28 and 469.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.86 : 1,627.28 = 469.10 : x
2. Step 2: Convert to fraction form
   1,085.86/1,627.28 = 469.10/x
3. Step 3: Cross multiply
   1,085.86x = 1,627.28 × 469.10
4. Step 4: Simplify right side
   1,085.86x = 763,357.05
5. Step 5: Solve for x
   x = 763,357.05/1,085.86
6. Step 6: Final answer
   x = 703.00