Finding the Fourth Proportional to 2,549.07, 3,820.53 and 1,315.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,549.07 : 3,820.53 = 1,315.81 : x
2. Step 2: Convert to fraction form
   2,549.07/3,820.53 = 1,315.81/x
3. Step 3: Cross multiply
   2,549.07x = 3,820.53 × 1,315.81
4. Step 4: Simplify right side
   2,549.07x = 5,027,079.62
5. Step 5: Solve for x
   x = 5,027,079.62/2,549.07
6. Step 6: Final answer
   x = 1,972.12