Finding the Fourth Proportional to 1,665.48, 2,298.15 and 1,002.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.48 : 2,298.15 = 1,002.45 : x
2. Step 2: Convert to fraction form
   1,665.48/2,298.15 = 1,002.45/x
3. Step 3: Cross multiply
   1,665.48x = 2,298.15 × 1,002.45
4. Step 4: Simplify right side
   1,665.48x = 2,303,780.47
5. Step 5: Solve for x
   x = 2,303,780.47/1,665.48
6. Step 6: Final answer
   x = 1,383.25