Finding the Fourth Proportional to 1,900.66, 2,848.59 and 872.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,900.66 : 2,848.59 = 872.50 : x
2. Step 2: Convert to fraction form
   1,900.66/2,848.59 = 872.50/x
3. Step 3: Cross multiply
   1,900.66x = 2,848.59 × 872.50
4. Step 4: Simplify right side
   1,900.66x = 2,485,394.78
5. Step 5: Solve for x
   x = 2,485,394.78/1,900.66
6. Step 6: Final answer
   x = 1,307.65