Finding the Fourth Proportional to 1,665.48, 2,298.90 and 1,075.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.48 : 2,298.90 = 1,075.56 : x
2. Step 2: Convert to fraction form
   1,665.48/2,298.90 = 1,075.56/x
3. Step 3: Cross multiply
   1,665.48x = 2,298.90 × 1,075.56
4. Step 4: Simplify right side
   1,665.48x = 2,472,604.88
5. Step 5: Solve for x
   x = 2,472,604.88/1,665.48
6. Step 6: Final answer
   x = 1,484.62