Finding the Fourth Proportional to 1,864.42, 2,573.34 and 1,155.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,864.42 : 2,573.34 = 1,155.83 : x
2. Step 2: Convert to fraction form
   1,864.42/2,573.34 = 1,155.83/x
3. Step 3: Cross multiply
   1,864.42x = 2,573.34 × 1,155.83
4. Step 4: Simplify right side
   1,864.42x = 2,974,343.57
5. Step 5: Solve for x
   x = 2,974,343.57/1,864.42
6. Step 6: Final answer
   x = 1,595.32