Finding the Fourth Proportional to 1,430.88, 1,973.34 and 899.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.88 : 1,973.34 = 899.82 : x
2. Step 2: Convert to fraction form
   1,430.88/1,973.34 = 899.82/x
3. Step 3: Cross multiply
   1,430.88x = 1,973.34 × 899.82
4. Step 4: Simplify right side
   1,430.88x = 1,775,650.80
5. Step 5: Solve for x
   x = 1,775,650.80/1,430.88
6. Step 6: Final answer
   x = 1,240.95