Finding the Fourth Proportional to 1,207,111.50, 1,810,890.27 and 397,541.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,207,111.50 : 1,810,890.27 = 397,541.34 : x
2. Step 2: Convert to fraction form
   1,207,111.50/1,810,890.27 = 397,541.34/x
3. Step 3: Cross multiply
   1,207,111.50x = 1,810,890.27 × 397,541.34
4. Step 4: Simplify right side
   1,207,111.50x = 719,903,744,528.76
5. Step 5: Solve for x
   x = 719,903,744,528.76/1,207,111.50
6. Step 6: Final answer
   x = 596,385.46