Finding the Fourth Proportional to 1,103.60, 1,522.45 and 705.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.60 : 1,522.45 = 705.05 : x
2. Step 2: Convert to fraction form
   1,103.60/1,522.45 = 705.05/x
3. Step 3: Cross multiply
   1,103.60x = 1,522.45 × 705.05
4. Step 4: Simplify right side
   1,103.60x = 1,073,405.42
5. Step 5: Solve for x
   x = 1,073,405.42/1,103.60
6. Step 6: Final answer
   x = 972.64