Finding the Fourth Proportional to 1,520.07, 2,280.15 and 904.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,520.07 : 2,280.15 = 904.02 : x
2. Step 2: Convert to fraction form
   1,520.07/2,280.15 = 904.02/x
3. Step 3: Cross multiply
   1,520.07x = 2,280.15 × 904.02
4. Step 4: Simplify right side
   1,520.07x = 2,061,301.20
5. Step 5: Solve for x
   x = 2,061,301.20/1,520.07
6. Step 6: Final answer
   x = 1,356.06