Finding the Fourth Proportional to 2,653.93, 3,980.80 and 1,010.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.93 : 3,980.80 = 1,010.42 : x
2. Step 2: Convert to fraction form
   2,653.93/3,980.80 = 1,010.42/x
3. Step 3: Cross multiply
   2,653.93x = 3,980.80 × 1,010.42
4. Step 4: Simplify right side
   2,653.93x = 4,022,279.94
5. Step 5: Solve for x
   x = 4,022,279.94/2,653.93
6. Step 6: Final answer
   x = 1,515.59