Finding the Fourth Proportional to 1,898.96, 2,620.55 and 1,112.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,898.96 : 2,620.55 = 1,112.86 : x
2. Step 2: Convert to fraction form
   1,898.96/2,620.55 = 1,112.86/x
3. Step 3: Cross multiply
   1,898.96x = 2,620.55 × 1,112.86
4. Step 4: Simplify right side
   1,898.96x = 2,916,286.61
5. Step 5: Solve for x
   x = 2,916,286.61/1,898.96
6. Step 6: Final answer
   x = 1,535.73