Finding the Fourth Proportional to 1,403.16, 1,935.30 and 1,030.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.16 : 1,935.30 = 1,030.02 : x
2. Step 2: Convert to fraction form
   1,403.16/1,935.30 = 1,030.02/x
3. Step 3: Cross multiply
   1,403.16x = 1,935.30 × 1,030.02
4. Step 4: Simplify right side
   1,403.16x = 1,993,397.71
5. Step 5: Solve for x
   x = 1,993,397.71/1,403.16
6. Step 6: Final answer
   x = 1,420.65