Finding the Fourth Proportional to 1,528.50, 2,290.59 and 747.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528.50 : 2,290.59 = 747.93 : x
2. Step 2: Convert to fraction form
   1,528.50/2,290.59 = 747.93/x
3. Step 3: Cross multiply
   1,528.50x = 2,290.59 × 747.93
4. Step 4: Simplify right side
   1,528.50x = 1,713,200.98
5. Step 5: Solve for x
   x = 1,713,200.98/1,528.50
6. Step 6: Final answer
   x = 1,120.84