Finding the Fourth Proportional to 1,053.16, 1,577.82 and 1,030.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.16 : 1,577.82 = 1,030.12 : x
2. Step 2: Convert to fraction form
   1,053.16/1,577.82 = 1,030.12/x
3. Step 3: Cross multiply
   1,053.16x = 1,577.82 × 1,030.12
4. Step 4: Simplify right side
   1,053.16x = 1,625,343.94
5. Step 5: Solve for x
   x = 1,625,343.94/1,053.16
6. Step 6: Final answer
   x = 1,543.30