Finding the Fourth Proportional to 1,852.50, 2,774.97 and 1,388.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,852.50 : 2,774.97 = 1,388.10 : x
2. Step 2: Convert to fraction form
   1,852.50/2,774.97 = 1,388.10/x
3. Step 3: Cross multiply
   1,852.50x = 2,774.97 × 1,388.10
4. Step 4: Simplify right side
   1,852.50x = 3,851,935.86
5. Step 5: Solve for x
   x = 3,851,935.86/1,852.50
6. Step 6: Final answer
   x = 2,079.32