Finding the Fourth Proportional to 1,902.18, 2,848.78 and 1,315.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,902.18 : 2,848.78 = 1,315.00 : x
2. Step 2: Convert to fraction form
   1,902.18/2,848.78 = 1,315.00/x
3. Step 3: Cross multiply
   1,902.18x = 2,848.78 × 1,315.00
4. Step 4: Simplify right side
   1,902.18x = 3,746,124.88
5. Step 5: Solve for x
   x = 3,746,124.88/1,902.18
6. Step 6: Final answer
   x = 1,969.39