Finding the Fourth Proportional to 2,357.71, 3,536.61 and 1,123.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,357.71 : 3,536.61 = 1,123.90 : x
2. Step 2: Convert to fraction form
   2,357.71/3,536.61 = 1,123.90/x
3. Step 3: Cross multiply
   2,357.71x = 3,536.61 × 1,123.90
4. Step 4: Simplify right side
   2,357.71x = 3,974,795.98
5. Step 5: Solve for x
   x = 3,974,795.98/2,357.71
6. Step 6: Final answer
   x = 1,685.87