Finding the Fourth Proportional to 1,878.56, 2,816.52 and 904.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,878.56 : 2,816.52 = 904.16 : x
2. Step 2: Convert to fraction form
   1,878.56/2,816.52 = 904.16/x
3. Step 3: Cross multiply
   1,878.56x = 2,816.52 × 904.16
4. Step 4: Simplify right side
   1,878.56x = 2,546,584.72
5. Step 5: Solve for x
   x = 2,546,584.72/1,878.56
6. Step 6: Final answer
   x = 1,355.60