Finding the Fourth Proportional to 1,212.73, 1,820.00 and 472.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212.73 : 1,820.00 = 472.46 : x
2. Step 2: Convert to fraction form
   1,212.73/1,820.00 = 472.46/x
3. Step 3: Cross multiply
   1,212.73x = 1,820.00 × 472.46
4. Step 4: Simplify right side
   1,212.73x = 859,865.74
5. Step 5: Solve for x
   x = 859,865.74/1,212.73
6. Step 6: Final answer
   x = 709.03