Finding the Fourth Proportional to 1,860.52, 2,792.12 and 1,245.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,860.52 : 2,792.12 = 1,245.40 : x
2. Step 2: Convert to fraction form
   1,860.52/2,792.12 = 1,245.40/x
3. Step 3: Cross multiply
   1,860.52x = 2,792.12 × 1,245.40
4. Step 4: Simplify right side
   1,860.52x = 3,477,306.25
5. Step 5: Solve for x
   x = 3,477,306.25/1,860.52
6. Step 6: Final answer
   x = 1,869.00