Finding the Fourth Proportional to 3,718.79, 5,131.59 and 2,146.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,718.79 : 5,131.59 = 2,146.58 : x
2. Step 2: Convert to fraction form
   3,718.79/5,131.59 = 2,146.58/x
3. Step 3: Cross multiply
   3,718.79x = 5,131.59 × 2,146.58
4. Step 4: Simplify right side
   3,718.79x = 11,015,368.46
5. Step 5: Solve for x
   x = 11,015,368.46/3,718.79
6. Step 6: Final answer
   x = 2,962.08