Finding the Fourth Proportional to 2,058.66, 2,845.40 and 1,820.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.66 : 2,845.40 = 1,820.93 : x
2. Step 2: Convert to fraction form
   2,058.66/2,845.40 = 1,820.93/x
3. Step 3: Cross multiply
   2,058.66x = 2,845.40 × 1,820.93
4. Step 4: Simplify right side
   2,058.66x = 5,181,250.89
5. Step 5: Solve for x
   x = 5,181,250.89/2,058.66
6. Step 6: Final answer
   x = 2,516.81