Finding the Fourth Proportional to 2,538.58, 3,501.78 and 1,490.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.58 : 3,501.78 = 1,490.44 : x
2. Step 2: Convert to fraction form
   2,538.58/3,501.78 = 1,490.44/x
3. Step 3: Cross multiply
   2,538.58x = 3,501.78 × 1,490.44
4. Step 4: Simplify right side
   2,538.58x = 5,219,192.98
5. Step 5: Solve for x
   x = 5,219,192.98/2,538.58
6. Step 6: Final answer
   x = 2,055.95