Finding the Fourth Proportional to 2,478.84, 3,719.64 and 1,018.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.84 : 3,719.64 = 1,018.98 : x
2. Step 2: Convert to fraction form
   2,478.84/3,719.64 = 1,018.98/x
3. Step 3: Cross multiply
   2,478.84x = 3,719.64 × 1,018.98
4. Step 4: Simplify right side
   2,478.84x = 3,790,238.77
5. Step 5: Solve for x
   x = 3,790,238.77/2,478.84
6. Step 6: Final answer
   x = 1,529.04