Finding the Fourth Proportional to 1,587.30, 2,378.69 and 892.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,587.30 : 2,378.69 = 892.51 : x
2. Step 2: Convert to fraction form
   1,587.30/2,378.69 = 892.51/x
3. Step 3: Cross multiply
   1,587.30x = 2,378.69 × 892.51
4. Step 4: Simplify right side
   1,587.30x = 2,123,006.12
5. Step 5: Solve for x
   x = 2,123,006.12/1,587.30
6. Step 6: Final answer
   x = 1,337.49