Finding the Fourth Proportional to 1,931.77, 2,665.83 and 1,047.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.77 : 2,665.83 = 1,047.57 : x
2. Step 2: Convert to fraction form
   1,931.77/2,665.83 = 1,047.57/x
3. Step 3: Cross multiply
   1,931.77x = 2,665.83 × 1,047.57
4. Step 4: Simplify right side
   1,931.77x = 2,792,643.53
5. Step 5: Solve for x
   x = 2,792,643.53/1,931.77
6. Step 6: Final answer
   x = 1,445.64