Finding the Fourth Proportional to 1,078.03, 1,487.69 and 705.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.03 : 1,487.69 = 705.63 : x
2. Step 2: Convert to fraction form
   1,078.03/1,487.69 = 705.63/x
3. Step 3: Cross multiply
   1,078.03x = 1,487.69 × 705.63
4. Step 4: Simplify right side
   1,078.03x = 1,049,763.39
5. Step 5: Solve for x
   x = 1,049,763.39/1,078.03
6. Step 6: Final answer
   x = 973.78