Finding the Fourth Proportional to 3,561.93, 4,915.49 and 2,070.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561.93 : 4,915.49 = 2,070.79 : x
2. Step 2: Convert to fraction form
   3,561.93/4,915.49 = 2,070.79/x
3. Step 3: Cross multiply
   3,561.93x = 4,915.49 × 2,070.79
4. Step 4: Simplify right side
   3,561.93x = 10,178,924.89
5. Step 5: Solve for x
   x = 10,178,924.89/3,561.93
6. Step 6: Final answer
   x = 2,857.70