Finding the Fourth Proportional to 1,838.58, 2,742.79 and 1,788.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,838.58 : 2,742.79 = 1,788.38 : x
2. Step 2: Convert to fraction form
   1,838.58/2,742.79 = 1,788.38/x
3. Step 3: Cross multiply
   1,838.58x = 2,742.79 × 1,788.38
4. Step 4: Simplify right side
   1,838.58x = 4,905,150.78
5. Step 5: Solve for x
   x = 4,905,150.78/1,838.58
6. Step 6: Final answer
   x = 2,667.90