Finding the Fourth Proportional to 1,061.67, 1,592.88 and 477.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.67 : 1,592.88 = 477.09 : x
2. Step 2: Convert to fraction form
   1,061.67/1,592.88 = 477.09/x
3. Step 3: Cross multiply
   1,061.67x = 1,592.88 × 477.09
4. Step 4: Simplify right side
   1,061.67x = 759,947.12
5. Step 5: Solve for x
   x = 759,947.12/1,061.67
6. Step 6: Final answer
   x = 715.80