Finding the Fourth Proportional to 1,066.30, 1,471.71 and 624.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.30 : 1,471.71 = 624.58 : x
2. Step 2: Convert to fraction form
   1,066.30/1,471.71 = 624.58/x
3. Step 3: Cross multiply
   1,066.30x = 1,471.71 × 624.58
4. Step 4: Simplify right side
   1,066.30x = 919,200.63
5. Step 5: Solve for x
   x = 919,200.63/1,066.30
6. Step 6: Final answer
   x = 862.05