Finding the Fourth Proportional to 2,094.87, 3,139.86 and 1,121.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,094.87 : 3,139.86 = 1,121.67 : x
2. Step 2: Convert to fraction form
   2,094.87/3,139.86 = 1,121.67/x
3. Step 3: Cross multiply
   2,094.87x = 3,139.86 × 1,121.67
4. Step 4: Simplify right side
   2,094.87x = 3,521,886.77
5. Step 5: Solve for x
   x = 3,521,886.77/2,094.87
6. Step 6: Final answer
   x = 1,681.20