Finding the Fourth Proportional to 1,804.50, 2,490.42 and 1,018.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,804.50 : 2,490.42 = 1,018.50 : x
2. Step 2: Convert to fraction form
   1,804.50/2,490.42 = 1,018.50/x
3. Step 3: Cross multiply
   1,804.50x = 2,490.42 × 1,018.50
4. Step 4: Simplify right side
   1,804.50x = 2,536,492.77
5. Step 5: Solve for x
   x = 2,536,492.77/1,804.50
6. Step 6: Final answer
   x = 1,405.65