Finding the Fourth Proportional to 1,907.84, 2,862.32 and 1,128.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,907.84 : 2,862.32 = 1,128.56 : x
2. Step 2: Convert to fraction form
   1,907.84/2,862.32 = 1,128.56/x
3. Step 3: Cross multiply
   1,907.84x = 2,862.32 × 1,128.56
4. Step 4: Simplify right side
   1,907.84x = 3,230,299.86
5. Step 5: Solve for x
   x = 3,230,299.86/1,907.84
6. Step 6: Final answer
   x = 1,693.17