Finding the Fourth Proportional to 2,622.06, 3,611.43 and 1,957.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.06 : 3,611.43 = 1,957.86 : x
2. Step 2: Convert to fraction form
   2,622.06/3,611.43 = 1,957.86/x
3. Step 3: Cross multiply
   2,622.06x = 3,611.43 × 1,957.86
4. Step 4: Simplify right side
   2,622.06x = 7,070,674.34
5. Step 5: Solve for x
   x = 7,070,674.34/2,622.06
6. Step 6: Final answer
   x = 2,696.61