Finding the Fourth Proportional to 1,541.86, 2,128.05 and 904.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,541.86 : 2,128.05 = 904.16 : x
2. Step 2: Convert to fraction form
   1,541.86/2,128.05 = 904.16/x
3. Step 3: Cross multiply
   1,541.86x = 2,128.05 × 904.16
4. Step 4: Simplify right side
   1,541.86x = 1,924,103.01
5. Step 5: Solve for x
   x = 1,924,103.01/1,541.86
6. Step 6: Final answer
   x = 1,247.91