Finding the Fourth Proportional to 1,802.79, 2,487.83 and 974.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,802.79 : 2,487.83 = 974.79 : x
2. Step 2: Convert to fraction form
   1,802.79/2,487.83 = 974.79/x
3. Step 3: Cross multiply
   1,802.79x = 2,487.83 × 974.79
4. Step 4: Simplify right side
   1,802.79x = 2,425,111.81
5. Step 5: Solve for x
   x = 2,425,111.81/1,802.79
6. Step 6: Final answer
   x = 1,345.20