Finding the Fourth Proportional to 1,140,271.24, 1,710,388.94 and 392,323.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140,271.24 : 1,710,388.94 = 392,323.72 : x
2. Step 2: Convert to fraction form
   1,140,271.24/1,710,388.94 = 392,323.72/x
3. Step 3: Cross multiply
   1,140,271.24x = 1,710,388.94 × 392,323.72
4. Step 4: Simplify right side
   1,140,271.24x = 671,026,151,587.66
5. Step 5: Solve for x
   x = 671,026,151,587.66/1,140,271.24
6. Step 6: Final answer
   x = 588,479.41