Finding the Fourth Proportional to 1,111.49, 1,666.70 and 526.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.49 : 1,666.70 = 526.01 : x
2. Step 2: Convert to fraction form
   1,111.49/1,666.70 = 526.01/x
3. Step 3: Cross multiply
   1,111.49x = 1,666.70 × 526.01
4. Step 4: Simplify right side
   1,111.49x = 876,700.10
5. Step 5: Solve for x
   x = 876,700.10/1,111.49
6. Step 6: Final answer
   x = 788.76