Finding the Fourth Proportional to 1,710.72, 2,564.00 and 928.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,710.72 : 2,564.00 = 928.86 : x
2. Step 2: Convert to fraction form
   1,710.72/2,564.00 = 928.86/x
3. Step 3: Cross multiply
   1,710.72x = 2,564.00 × 928.86
4. Step 4: Simplify right side
   1,710.72x = 2,381,592.40
5. Step 5: Solve for x
   x = 2,381,592.40/1,710.72
6. Step 6: Final answer
   x = 1,392.16