Finding the Fourth Proportional to 2,059.74, 3,090.39 and 1,238.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.74 : 3,090.39 = 1,238.61 : x
2. Step 2: Convert to fraction form
   2,059.74/3,090.39 = 1,238.61/x
3. Step 3: Cross multiply
   2,059.74x = 3,090.39 × 1,238.61
4. Step 4: Simplify right side
   2,059.74x = 3,827,787.96
5. Step 5: Solve for x
   x = 3,827,787.96/2,059.74
6. Step 6: Final answer
   x = 1,858.38