Finding the Fourth Proportional to 1,924.81, 2,656.52 and 1,139.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,924.81 : 2,656.52 = 1,139.11 : x
2. Step 2: Convert to fraction form
   1,924.81/2,656.52 = 1,139.11/x
3. Step 3: Cross multiply
   1,924.81x = 2,656.52 × 1,139.11
4. Step 4: Simplify right side
   1,924.81x = 3,026,068.50
5. Step 5: Solve for x
   x = 3,026,068.50/1,924.81
6. Step 6: Final answer
   x = 1,572.14