Finding the Fourth Proportional to 970,071.56, 1,338,521.34 and 540,340.76

Step by Step Solution

1. Step 1: Write the proportion equation
   970,071.56 : 1,338,521.34 = 540,340.76 : x
2. Step 2: Convert to fraction form
   970,071.56/1,338,521.34 = 540,340.76/x
3. Step 3: Cross multiply
   970,071.56x = 1,338,521.34 × 540,340.76
4. Step 4: Simplify right side
   970,071.56x = 723,257,638,131.82
5. Step 5: Solve for x
   x = 723,257,638,131.82/970,071.56
6. Step 6: Final answer
   x = 745,571.43