Finding the Fourth Proportional to 1,833.14, 2,530.05 and 1,392.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,833.14 : 2,530.05 = 1,392.50 : x
2. Step 2: Convert to fraction form
   1,833.14/2,530.05 = 1,392.50/x
3. Step 3: Cross multiply
   1,833.14x = 2,530.05 × 1,392.50
4. Step 4: Simplify right side
   1,833.14x = 3,523,094.63
5. Step 5: Solve for x
   x = 3,523,094.63/1,833.14
6. Step 6: Final answer
   x = 1,921.89