Finding the Fourth Proportional to 2,140,243.92, 3,210,328.86 and 720,300

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,243.92 : 3,210,328.86 = 720,300 : x
2. Step 2: Convert to fraction form
   2,140,243.92/3,210,328.86 = 720,300/x
3. Step 3: Cross multiply
   2,140,243.92x = 3,210,328.86 × 720,300
4. Step 4: Simplify right side
   2,140,243.92x = 2,312,399,877,858
5. Step 5: Solve for x
   x = 2,312,399,877,858/2,140,243.92
6. Step 6: Final answer
   x = 1,080,437.54