Finding the Fourth Proportional to 1,666.72, 2,298.96 and 1,002.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666.72 : 2,298.96 = 1,002.88 : x
2. Step 2: Convert to fraction form
   1,666.72/2,298.96 = 1,002.88/x
3. Step 3: Cross multiply
   1,666.72x = 2,298.96 × 1,002.88
4. Step 4: Simplify right side
   1,666.72x = 2,305,583.88
5. Step 5: Solve for x
   x = 2,305,583.88/1,666.72
6. Step 6: Final answer
   x = 1,383.31