Finding the Fourth Proportional to 1,587.63, 2,190.83 and 924.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,587.63 : 2,190.83 = 924.38 : x
2. Step 2: Convert to fraction form
   1,587.63/2,190.83 = 924.38/x
3. Step 3: Cross multiply
   1,587.63x = 2,190.83 × 924.38
4. Step 4: Simplify right side
   1,587.63x = 2,025,143.86
5. Step 5: Solve for x
   x = 2,025,143.86/1,587.63
6. Step 6: Final answer
   x = 1,275.58