Finding the Fourth Proportional to 700,610.88, 1,051,259.76 and 434,300.88

Step by Step Solution

1. Step 1: Write the proportion equation
   700,610.88 : 1,051,259.76 = 434,300.88 : x
2. Step 2: Convert to fraction form
   700,610.88/1,051,259.76 = 434,300.88/x
3. Step 3: Cross multiply
   700,610.88x = 1,051,259.76 × 434,300.88
4. Step 4: Simplify right side
   700,610.88x = 456,563,038,876.59
5. Step 5: Solve for x
   x = 456,563,038,876.59/700,610.88
6. Step 6: Final answer
   x = 651,664.21