Finding the Fourth Proportional to 1,898.46, 2,620.10 and 1,152.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,898.46 : 2,620.10 = 1,152.61 : x
2. Step 2: Convert to fraction form
   1,898.46/2,620.10 = 1,152.61/x
3. Step 3: Cross multiply
   1,898.46x = 2,620.10 × 1,152.61
4. Step 4: Simplify right side
   1,898.46x = 3,019,953.46
5. Step 5: Solve for x
   x = 3,019,953.46/1,898.46
6. Step 6: Final answer
   x = 1,590.74