Finding the Fourth Proportional to 1,758.87, 2,632.12 and 1,389.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,758.87 : 2,632.12 = 1,389.81 : x
2. Step 2: Convert to fraction form
   1,758.87/2,632.12 = 1,389.81/x
3. Step 3: Cross multiply
   1,758.87x = 2,632.12 × 1,389.81
4. Step 4: Simplify right side
   1,758.87x = 3,658,146.70
5. Step 5: Solve for x
   x = 3,658,146.70/1,758.87
6. Step 6: Final answer
   x = 2,079.83