Finding the Fourth Proportional to 1,898.83, 2,850.86 and 1,312.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,898.83 : 2,850.86 = 1,312.38 : x
2. Step 2: Convert to fraction form
   1,898.83/2,850.86 = 1,312.38/x
3. Step 3: Cross multiply
   1,898.83x = 2,850.86 × 1,312.38
4. Step 4: Simplify right side
   1,898.83x = 3,741,405.08
5. Step 5: Solve for x
   x = 3,741,405.08/1,898.83
6. Step 6: Final answer
   x = 1,970.38