Finding the Fourth Proportional to 1,530.18, 2,111.52 and 866.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.18 : 2,111.52 = 866.90 : x
2. Step 2: Convert to fraction form
   1,530.18/2,111.52 = 866.90/x
3. Step 3: Cross multiply
   1,530.18x = 2,111.52 × 866.90
4. Step 4: Simplify right side
   1,530.18x = 1,830,476.69
5. Step 5: Solve for x
   x = 1,830,476.69/1,530.18
6. Step 6: Final answer
   x = 1,196.25