Finding the Fourth Proportional to 1,913.77, 2,638.69 and 1,488.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,913.77 : 2,638.69 = 1,488.52 : x
2. Step 2: Convert to fraction form
   1,913.77/2,638.69 = 1,488.52/x
3. Step 3: Cross multiply
   1,913.77x = 2,638.69 × 1,488.52
4. Step 4: Simplify right side
   1,913.77x = 3,927,732.52
5. Step 5: Solve for x
   x = 3,927,732.52/1,913.77
6. Step 6: Final answer
   x = 2,052.36