Finding the Fourth Proportional to 2,010.47, 3,014.72 and 840.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.47 : 3,014.72 = 840.13 : x
2. Step 2: Convert to fraction form
   2,010.47/3,014.72 = 840.13/x
3. Step 3: Cross multiply
   2,010.47x = 3,014.72 × 840.13
4. Step 4: Simplify right side
   2,010.47x = 2,532,751.28
5. Step 5: Solve for x
   x = 2,532,751.28/2,010.47
6. Step 6: Final answer
   x = 1,259.78