Finding the Fourth Proportional to 1,066.80, 1,472.58 and 624.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.80 : 1,472.58 = 624.84 : x
2. Step 2: Convert to fraction form
   1,066.80/1,472.58 = 624.84/x
3. Step 3: Cross multiply
   1,066.80x = 1,472.58 × 624.84
4. Step 4: Simplify right side
   1,066.80x = 920,126.89
5. Step 5: Solve for x
   x = 920,126.89/1,066.80
6. Step 6: Final answer
   x = 862.51