Finding the Fourth Proportional to 1,878.06, 2,821.15 and 1,148.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,878.06 : 2,821.15 = 1,148.08 : x
2. Step 2: Convert to fraction form
   1,878.06/2,821.15 = 1,148.08/x
3. Step 3: Cross multiply
   1,878.06x = 2,821.15 × 1,148.08
4. Step 4: Simplify right side
   1,878.06x = 3,238,905.89
5. Step 5: Solve for x
   x = 3,238,905.89/1,878.06
6. Step 6: Final answer
   x = 1,724.60