Finding the Fourth Proportional to 1,804.96, 2,490.96 and 1,018.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,804.96 : 2,490.96 = 1,018.72 : x
2. Step 2: Convert to fraction form
   1,804.96/2,490.96 = 1,018.72/x
3. Step 3: Cross multiply
   1,804.96x = 2,490.96 × 1,018.72
4. Step 4: Simplify right side
   1,804.96x = 2,537,590.77
5. Step 5: Solve for x
   x = 2,537,590.77/1,804.96
6. Step 6: Final answer
   x = 1,405.90