Finding the Fourth Proportional to 1,583.83, 2,364.62 and 1,428.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,583.83 : 2,364.62 = 1,428.31 : x
2. Step 2: Convert to fraction form
   1,583.83/2,364.62 = 1,428.31/x
3. Step 3: Cross multiply
   1,583.83x = 2,364.62 × 1,428.31
4. Step 4: Simplify right side
   1,583.83x = 3,377,410.39
5. Step 5: Solve for x
   x = 3,377,410.39/1,583.83
6. Step 6: Final answer
   x = 2,132.43