Finding the Fourth Proportional to 1,920.42, 2,638.69 and 1,526.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,920.42 : 2,638.69 = 1,526.76 : x
2. Step 2: Convert to fraction form
   1,920.42/2,638.69 = 1,526.76/x
3. Step 3: Cross multiply
   1,920.42x = 2,638.69 × 1,526.76
4. Step 4: Simplify right side
   1,920.42x = 4,028,646.34
5. Step 5: Solve for x
   x = 4,028,646.34/1,920.42
6. Step 6: Final answer
   x = 2,097.79