Finding the Fourth Proportional to 1,048.82, 1,572.15 and 472.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,048.82 : 1,572.15 = 472.10 : x
2. Step 2: Convert to fraction form
   1,048.82/1,572.15 = 472.10/x
3. Step 3: Cross multiply
   1,048.82x = 1,572.15 × 472.10
4. Step 4: Simplify right side
   1,048.82x = 742,212.02
5. Step 5: Solve for x
   x = 742,212.02/1,048.82
6. Step 6: Final answer
   x = 707.66