Finding the Fourth Proportional to 1,530.06, 2,111.50 and 866.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.06 : 2,111.50 = 866.90 : x
2. Step 2: Convert to fraction form
   1,530.06/2,111.50 = 866.90/x
3. Step 3: Cross multiply
   1,530.06x = 2,111.50 × 866.90
4. Step 4: Simplify right side
   1,530.06x = 1,830,446.63
5. Step 5: Solve for x
   x = 1,830,446.63/1,530.06
6. Step 6: Final answer
   x = 1,196.32