Finding the Fourth Proportional to 1,665.76, 2,298.84 and 1,076.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.76 : 2,298.84 = 1,076.80 : x
2. Step 2: Convert to fraction form
   1,665.76/2,298.84 = 1,076.80/x
3. Step 3: Cross multiply
   1,665.76x = 2,298.84 × 1,076.80
4. Step 4: Simplify right side
   1,665.76x = 2,475,390.91
5. Step 5: Solve for x
   x = 2,475,390.91/1,665.76
6. Step 6: Final answer
   x = 1,486.04