Finding the Fourth Proportional to 2,515.59, 3,774.80 and 1,054.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,515.59 : 3,774.80 = 1,054.69 : x
2. Step 2: Convert to fraction form
   2,515.59/3,774.80 = 1,054.69/x
3. Step 3: Cross multiply
   2,515.59x = 3,774.80 × 1,054.69
4. Step 4: Simplify right side
   2,515.59x = 3,981,237.01
5. Step 5: Solve for x
   x = 3,981,237.01/2,515.59
6. Step 6: Final answer
   x = 1,582.63