Finding the Fourth Proportional to 1,886.04, 2,829.72 and 846.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.04 : 2,829.72 = 846.78 : x
2. Step 2: Convert to fraction form
   1,886.04/2,829.72 = 846.78/x
3. Step 3: Cross multiply
   1,886.04x = 2,829.72 × 846.78
4. Step 4: Simplify right side
   1,886.04x = 2,396,150.30
5. Step 5: Solve for x
   x = 2,396,150.30/1,886.04
6. Step 6: Final answer
   x = 1,270.47