Finding the Fourth Proportional to 1,428.74, 1,971.96 and 1,093.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,428.74 : 1,971.96 = 1,093.53 : x
2. Step 2: Convert to fraction form
   1,428.74/1,971.96 = 1,093.53/x
3. Step 3: Cross multiply
   1,428.74x = 1,971.96 × 1,093.53
4. Step 4: Simplify right side
   1,428.74x = 2,156,397.42
5. Step 5: Solve for x
   x = 2,156,397.42/1,428.74
6. Step 6: Final answer
   x = 1,509.31