Finding the Fourth Proportional to 1,079.10, 1,488.18 and 705.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.10 : 1,488.18 = 705.96 : x
2. Step 2: Convert to fraction form
   1,079.10/1,488.18 = 705.96/x
3. Step 3: Cross multiply
   1,079.10x = 1,488.18 × 705.96
4. Step 4: Simplify right side
   1,079.10x = 1,050,595.55
5. Step 5: Solve for x
   x = 1,050,595.55/1,079.10
6. Step 6: Final answer
   x = 973.58