Finding the Fourth Proportional to 1,526.72, 2,106.12 and 1,028.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,526.72 : 2,106.12 = 1,028.72 : x
2. Step 2: Convert to fraction form
   1,526.72/2,106.12 = 1,028.72/x
3. Step 3: Cross multiply
   1,526.72x = 2,106.12 × 1,028.72
4. Step 4: Simplify right side
   1,526.72x = 2,166,607.77
5. Step 5: Solve for x
   x = 2,166,607.77/1,526.72
6. Step 6: Final answer
   x = 1,419.13