Finding the Fourth Proportional to 1,111.13, 1,666.69 and 461.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.13 : 1,666.69 = 461.88 : x
2. Step 2: Convert to fraction form
   1,111.13/1,666.69 = 461.88/x
3. Step 3: Cross multiply
   1,111.13x = 1,666.69 × 461.88
4. Step 4: Simplify right side
   1,111.13x = 769,810.78
5. Step 5: Solve for x
   x = 769,810.78/1,111.13
6. Step 6: Final answer
   x = 692.82