Finding the Fourth Proportional to 724,870.23, 1,000,288.55 and 434,642.00

Step by Step Solution

1. Step 1: Write the proportion equation
   724,870.23 : 1,000,288.55 = 434,642.00 : x
2. Step 2: Convert to fraction form
   724,870.23/1,000,288.55 = 434,642.00/x
3. Step 3: Cross multiply
   724,870.23x = 1,000,288.55 × 434,642.00
4. Step 4: Simplify right side
   724,870.23x = 434,767,408,774.45
5. Step 5: Solve for x
   x = 434,767,408,774.45/724,870.23
6. Step 6: Final answer
   x = 599,786.54