Finding the Fourth Proportional to 1,152,858.56, 1,590,971.64 and 723,156.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,858.56 : 1,590,971.64 = 723,156.80 : x
2. Step 2: Convert to fraction form
   1,152,858.56/1,590,971.64 = 723,156.80/x
3. Step 3: Cross multiply
   1,152,858.56x = 1,590,971.64 × 723,156.80
4. Step 4: Simplify right side
   1,152,858.56x = 1,150,521,960,073.15
5. Step 5: Solve for x
   x = 1,150,521,960,073.15/1,152,858.56
6. Step 6: Final answer
   x = 997,973.21