Finding the Fourth Proportional to 1,487.53, 2,054.37 and 1,128.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,487.53 : 2,054.37 = 1,128.04 : x
2. Step 2: Convert to fraction form
   1,487.53/2,054.37 = 1,128.04/x
3. Step 3: Cross multiply
   1,487.53x = 2,054.37 × 1,128.04
4. Step 4: Simplify right side
   1,487.53x = 2,317,411.53
5. Step 5: Solve for x
   x = 2,317,411.53/1,487.53
6. Step 6: Final answer
   x = 1,557.89