Finding the Fourth Proportional to 1,530.47, 2,111.82 and 900.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.47 : 2,111.82 = 900.95 : x
2. Step 2: Convert to fraction form
   1,530.47/2,111.82 = 900.95/x
3. Step 3: Cross multiply
   1,530.47x = 2,111.82 × 900.95
4. Step 4: Simplify right side
   1,530.47x = 1,902,644.23
5. Step 5: Solve for x
   x = 1,902,644.23/1,530.47
6. Step 6: Final answer
   x = 1,243.18