Finding the Fourth Proportional to 2,051.89, 2,830.92 and 1,212.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,051.89 : 2,830.92 = 1,212.86 : x
2. Step 2: Convert to fraction form
   2,051.89/2,830.92 = 1,212.86/x
3. Step 3: Cross multiply
   2,051.89x = 2,830.92 × 1,212.86
4. Step 4: Simplify right side
   2,051.89x = 3,433,509.63
5. Step 5: Solve for x
   x = 3,433,509.63/2,051.89
6. Step 6: Final answer
   x = 1,673.34