Finding the Fourth Proportional to 1,683.30, 2,322.51 and 1,019.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,683.30 : 2,322.51 = 1,019.91 : x
2. Step 2: Convert to fraction form
   1,683.30/2,322.51 = 1,019.91/x
3. Step 3: Cross multiply
   1,683.30x = 2,322.51 × 1,019.91
4. Step 4: Simplify right side
   1,683.30x = 2,368,751.17
5. Step 5: Solve for x
   x = 2,368,751.17/1,683.30
6. Step 6: Final answer
   x = 1,407.21