Finding the Fourth Proportional to 2,528.12, 3,792.18 and 1,381.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,528.12 : 3,792.18 = 1,381.16 : x
2. Step 2: Convert to fraction form
   2,528.12/3,792.18 = 1,381.16/x
3. Step 3: Cross multiply
   2,528.12x = 3,792.18 × 1,381.16
4. Step 4: Simplify right side
   2,528.12x = 5,237,588.37
5. Step 5: Solve for x
   x = 5,237,588.37/2,528.12
6. Step 6: Final answer
   x = 2,071.74