Finding the Fourth Proportional to 1,873.60, 2,585.72 and 1,087.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,873.60 : 2,585.72 = 1,087.63 : x
2. Step 2: Convert to fraction form
   1,873.60/2,585.72 = 1,087.63/x
3. Step 3: Cross multiply
   1,873.60x = 2,585.72 × 1,087.63
4. Step 4: Simplify right side
   1,873.60x = 2,812,302.90
5. Step 5: Solve for x
   x = 2,812,302.90/1,873.60
6. Step 6: Final answer
   x = 1,501.02