Finding the Fourth Proportional to 1,913.98, 2,868.54 and 1,048.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,913.98 : 2,868.54 = 1,048.90 : x
2. Step 2: Convert to fraction form
   1,913.98/2,868.54 = 1,048.90/x
3. Step 3: Cross multiply
   1,913.98x = 2,868.54 × 1,048.90
4. Step 4: Simplify right side
   1,913.98x = 3,008,811.61
5. Step 5: Solve for x
   x = 3,008,811.61/1,913.98
6. Step 6: Final answer
   x = 1,572.02