Finding the Fourth Proportional to 1,709.94, 2,564.52 and 477.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,709.94 : 2,564.52 = 477.31 : x
2. Step 2: Convert to fraction form
   1,709.94/2,564.52 = 477.31/x
3. Step 3: Cross multiply
   1,709.94x = 2,564.52 × 477.31
4. Step 4: Simplify right side
   1,709.94x = 1,224,071.04
5. Step 5: Solve for x
   x = 1,224,071.04/1,709.94
6. Step 6: Final answer
   x = 715.86